Author Archives: Priyanka

In This Post we are  providing Chapter-3 Discovering Tut: The Saga Continues NCERT MCQ for Class 11 English Hornbill which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON DISCOVERING TUT: THE SAGA CONTINUES

Q1. How did Tut die?

(i) It is a mystery
(ii) Due to heart attack
(iii) Due to Cancer
(iv) During a warShow Answer

Answer (i) It is a mystery

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Q2. What is the Cemetery of Tut called?

(i) Valley of the Kings
(ii) Tut’s Resting Place
(iii) Resting Peace
(iv) Valley of Flowers

Answer (i) Valley of the Kings

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Q3. When was Tut’s body taken for CT scan after being found?

(i) After 1 year
(ii) After 80 years
(iii) After 50 years
(iv) After 30 yearsShow Answer

Answer (ii) After 80 years

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Q4. Tut was laid to rest, laden with ………

(i) platinum
(ii) aluminum
(iii) gold
(iv) silver

Answer (iii) gold

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Q5. Who said “The mummy is in very bad condition because of what Carter did in the 1920s”?

(i) Carter
(ii) Zahi Hawass
(iii) an anatomy professor
(iv) A Egypt Historian

Answer (ii) Zahi Hawass

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Q6. Who discovered Tut’s tomb and when?

(i) Adam Cooper in 1901
(ii) Howard Carter in 1922
(iii) Howard Carter in 1930
(iv) Sam Shaw in 1890

Answer (ii) Howard Carter in 1922

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Q7. Who is Osiris?

(i) god of nature
(ii) god of afterlife
(iii) god of seasons
(iv) god of universe

Answer (ii) god of afterlife

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Q8. When did Tut die?

(i) 22000 years ago
(ii) more than 33000 years ago
(iii) 10000 years ago
(iv) 16000 years ago

Answer (ii) more than 33000 years ago

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Q9. Who was Tutankhamun?

(i) A Geologist
(ii) A Scientist
(iii) An Egyptian king
(iv) A historian

Answer (iii) An Egyptian king

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Q10. When was Tut’s body taken back in his tomb after CT scan?

(i) After a day
(ii) After 3 hours
(iii) After 12 hours
(iv) After 5 hours

Answer (ii) After 3 hours

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Q11. How has archeology changed through the decades ?

(i) focusses more on treasure
(ii) focusses more on physical findings
(iii) focusses on time factors more
(iv) focusing less on treasure and more on the fascinating details of life and mysteries of death

Answer (iv) focusing less on treasure and more on the fascinating details of life and mysterious

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Q12. How did the workmen lift the body for the scan?

(i) through the stairs
(ii) on a hydraulic trailer
(iii) through sliding
(iv) through lift

Answer (ii) on a hydraulic trailer

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Q13. Why did the procedure stop in between?

(i) As spare fan stopped working
(ii) as the light went off
(iii) As the lift broken
(iv) none of the above

Answer (i) As spare fan stopped working

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Q14. For how many years did Amenhotep III rule Egypt?

(i) 5 years
(ii) 20 years
(iii) 10 years
(iv) 40 years

Answer (iv) 40 years

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Q15. When was the mummy examined in X-Ray by the anatomy professor?

(i) In 1945
(ii) In 1986
(iii) In 1968
(iv) Never

Answer (iii) In 1968

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In This Post we are  providing Chapter-2 We’re not Afraid to die.. if we can all be Together NCERT MCQ for Class 11 English Hornbill which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON WE’RE NOT AFRAID TO DIE… IF WE CAN ALL BE TOGETHER

Question 1. What happened after the hand pumps started to block up with the debris floating around the cabins?
(a) the author connected an electric-pump to an out-pipe
(b) by taking out water with the help of bucket
(c) by repairing hand pump
(d) the author found another hand pump

Answer  :  A

Question 2. Where did they decide to reach to save themselves and the ship?
(a) Australia
(b) Ile Amsterdam
(c) Mumbai, India
(d) Japan

Answer  :  B

Question 3. What happened after the hand pumps started to block up with the debris floating around the cabins?
(a) the author connected an electric-pump to an out-pipe
(b) by taking out water with the help of bucket
(c) by repairing hand pump
(d) the author found another hand pump

Answer  :  A

Question 4. When did they reach lle Amsterdam?
(a) around 6 pm in the evening
(b) never reached there
(c) at 11 in the next morning
(d) they decided to take different route

Answer  :  A

Question 5. When did they reach lle Amsterdam?
(a) around 6 pm in the evening
(b) never reached there
(c) at 11 in the next morning
(d) they decided to take different route

Answer  :  A

Question 6. Why did the author hire the two crewmen?
(a) to take rest from long the voyage
(b) to help tackle one of the world’s roughest seas, the southern Indian Ocean
(c) because he could no longer sail the ship
(d) he wanted to spend some time with his family

Answer  :  B

Question 7. What happened when the author’s head smashed into the wheel?
(a) he was hurt but steady
(b) he flew overboard sinking below the waves
(c) he was not hurt
(d) he gained control immediately

Answer  :  B

Question 8. What happened after the first indication of the disaster?
(a) a wave appeared vertical and almost twice the height of other waves
(b) it broke the ship from inside
(c) the ship turned upside down
(d) it didn’t affect the ship

Answer  :  A

Question 9. Why did the author accept his approaching death?
(a) Pirates had attacked the ship
(b) because he was injured by the explosion
(c) he was thrown in the sea
(d) he was stabbed

Answer  :  A

Question 10: Find out the synonym of ‘Honing’ from the following?
(a) Perfect
(b) Sharpen
(c) Taper
(d) All of these

Answer  :  D

Question 11: what was the occupation of the author?
(a) Businessman
(b) Sailor
(c) Teacher
(d) None of the above

Answer  :  A

Question 12: why did the author hire the two Crewmen?
(a) to take rest from the long the voyage
(b) to help tackle one of the world’s roughest seas, the Southern Indian Ocean
(c) Because he could no longer sail the ship
(d) He wanted to spend some time with his family

Answer  :  B

Question13. Who said, “we aren’t afraid of dying if we can all be together — you and Mummy, Sue and I.”?
(a) Jon
(b) Crewmen to each other
(c) Suz
(d) Mom

Answer  :  A

Question 14: what happened after the first indication of disaster? 
(a) A wave appeared Vertical, almost twice the height of other waves
(b) Thunder and lightning
(c) The ship turned upside down due to Tsunami
(d) It didn’t affect the ship

Answer  :  A

Question 15: what happened to the author’s body when he managed to reach the deck? 
(a) his head smashed against the deck and his eye was injured
(b) his left ribs cracked mouth was filled with blood and broken teeth
(c) he broken his right leg and hip bone
(d) his broken his left hand and shoulder

Answer  :  B

In This Post we are  providing Chapter-1 The Portrait of a Lady NCERT MCQ for Class 11 English Hornbill which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON THE PORTRAIT OF A LADY

Q1. Where was the author’s grandfather’s portrait placed?

(i) on a shelf
(ii) hung above the mantelpiece
(iii) put on the mantelpiece
(iv) on a table

Answer (ii) hung above the mantelpiece

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Q2. How do you feel about the character of the grandmother in the chapter?

(i) Emotional
(ii) Strong
(iii) Selfless
(iv) Loving

Answer (ii) Strong

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Q3. When was their common link of friendship snapped?

(i) when he went to college
(ii) When he went to the university, they were given separate rooms
(iii) when he started working
(iv) When he went abroad

Answer (ii) When he went to the university, they were given separate rooms

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Q4. Did the author bother to learn the morning prayers that his grandmother recited?

(i) yes
(ii) he listened but did not bother to learn
(iii) he could not learn
(iv) no

Answer (ii) he listened but did not bother to learn

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Q5. What was her reaction when he came back after 5 years?

(i) Overwhelmed
(ii) clasped the author in her arms and said prayers
(iii) happy
(iv) sentimental

Answer (ii) clasped the author in her arms and said prayers

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Q6. What was grandmother’s reaction when the author was going abroad?

(i) Happy
(ii) sad
(iii) not even sentimental
(iv) Sentimental

Answer (iii) not even sentimental

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Q7. What happened when they took the grandmother’s corpse away?

(i) Neighbors visited them to pay condolences
(ii) they mourned her death in her room
(iii) birds flew away quietly
(iv) Nothing happened

Answer (iii) birds flew away quietly

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Q8. How did the sparrows express their sorrow at the death of their grandmother?

(i) They didn’t come that day
(ii) they came and sat silently in the verandah
(iii)They ate the bread crumbs
(iv) they chirruped a lot

Answer (ii) they came and sat silently in the verandah

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Q9. How did the grandmother die?

(i) during telling beads laying on the bed
(ii) In the hospital
(iii) While sleeping
(iv) None of the above

Answer (i) during telling beads laying on the bed

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Q10. What did the grandmother do in her final hours?

(i) Talked to everyone in the house
(ii) worried about everyone
(iii) Silently praying and telling her beads
(iv) Went to temple

Answer (iii) Silently praying and telling her beads

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Q11. How did the grandmother react to her illness?

(i) She said her end was near
(ii) She ignored her health
(iii) She took care of her
(iv) She was admitted to the hospital

Answer (i) She said her end was near

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Q12. What happened when the grandmother didn’t pray for the first time?

(i) She fell ill the next day
(ii) She made this her routine
(iii) She took a break and went to the village
(iv) None of the above

Answer (i) She fell ill the next day

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Q13. What change came in the grandmother’s evening schedule?

(i) She collected the women of the neighborhood
(ii) She would go for a walk
(iii) She would sleep early
(iv) She would talk to his parents

Answer (i) She collected the women of the neighborhood

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Q14. What happened when the author moved abroad to study for five years?

(i) grandmother bid goodbye by silently kissing his forehead
(ii) No one came to see him
(iii) Grandmother moved back to village
(iv) Parents moved with him

Answer (i) grandmother bid goodbye by silently kissing his forehead

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Q15. How did the grandmother spend her afternoon everyday?

(i) by feeding hundred of sparrows
(ii) by taking a nap
(iii) by talking to author’s mother
(iv) by going to temple

Answer (i) by feeding hundred of sparrows

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In This Post we are  providing Chapter-22 Chemical Coordination and Integration NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON CHEMICAL COORDINATION AND INTEGRATION

Question 1.
Philips collip discovered which of the following hormones:
(a) Parathyroid hormone
(b) Thyroxine
(c) A.D.H.
(d) Oxytocin

Answer: (a) Parathyroid hormone

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Question 2.
Goiter is a pathological condition associated with:
(a) Glucagon
(b) Thyroxine
(c) Progesterone
(d) Testosterone

Answer: (b) Thyroxine

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Question 3.
The other name of internal ear is:
(a) Utriculus
(b) Membranous labyrinth
(c) Saccules
(d) Ductus endolymphatic

Answer: (b) Membranous labyrinth

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Question 4.
Who is known as the ‘father of endocrinology’?
(a) Thomas Addison
(b) Pasteur
(c) R. H. Whittaker
(d) Einthoven

Answer: (a) Thomas Addison

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Question 5.
Which of the following is stirrup shaped ear ossicle
(a) Incus
(b) Stapes
(c) Malleus
(d) Humerus

Answer: (b) Stapes

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Question 6.
By the stimulation of which structure of human ear, the sound waves are perceived by brain :-
(a) Basilar membrane
(b) Tectorial membrane
(c) Meissner’s membrane
(d) Sensory hair cells of organ of cortex

Answer: (d) Sensory hair cells of organ of cortex

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Question 7.
Rabbit has:
(a) Monocular vision
(b) Binocular vision
(c) Conjunctiva
(d) Cornea

Answer: (a) Monocular vision

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Question 8.
Chemically, hormones are
(a) Proteins, steroids and biogenic amines
(b) Steroids only
(c) Biogenic amines only
(d) Proteins only

Answer: (a) Proteins, steroids and biogenic amines

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Question 9.
Cochlea of mammalian ear is concerned with:
(a) Balancing of body
(b) Hearing
(c) Perception of atmospheric pressure
(d) Both (a) and (b)

Answer: (b) Hearing

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Question 10.
The ‘islets of Langerhans’ are found in
(a) Alimentary canal
(b) Stomach
(c) Liver
(d) Pancreas

Answer: (d) Pancreas

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Question 11.
Meibomian gland are associated with:
(a) Eyes
(b) Ears
(c) Reproductive organ
(d) Skin

Answer: (a) Eyes

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Question 12.
Injection of which of the following increases metabolic rate :-
(a) STH
(b) Insulin
(c) Thyroxine
(d) Testosterone

Answer: (c) Thyroxine

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Question 13.
Parathormone regulates:
(a) Blood calcium level
(b) Calcium phosphate level
(c) Body temperature
(d) None of the above

Answer: (a) Blood calcium level

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Question 14.
Steroid hormones easily pass through the plasma membrane by simple diffusion because they
(a) Are water-soluble
(b) Are lipid-soluble
(c) Enter through pores
(d) Contain carbon and hydrogen

Answer: (b) Are lipid-soluble

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Question 15.
BMR is increased due to:
(a) Sympathetic nervous system
(b) Adrenaline
(c) Parasympathetic nervous system
(d) Thyroxine

Answer: (d) Thyroxine

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In This Post we are  providing Chapter-21 Neural Control and Coordination NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON NEURAL CONTROL AND COORDINATION

Question 1 :  Which one of the following does not act as a neurotransmitter ?

• a) Cortisone
• b) Epinephrine
• c) Acetylcholine
• d) Norepinephrine

Answer : Cortisone

Question 2 : The cochlea of ear contains

• a) perilymph and endolymph
• b) only endolymph
• c) aqueous humour
• d) perilymph

Answer : perilymph and endolymph

Question 3 : Eustachian tube connects

• a) Middle ear with pharynx
• b) Internal pharyax
• c) External ear with internal ear
• d) External ear with middle ear

Answer : Middle ear with pharynx

Question 4 : Mark the incorrect statement

• a) Opsin (of Rhodopsin) develops from vitamin A
• b) The pressure on ear drum is equalized by eustachian tube
• c) Otolith organ consists of saccule and utricle
• d) None of these

Answer : Opsin (of Rhodopsin) develops from vitamin A

Question 5 : Frequency of sound is discriminated by

• a) The site at the cochlear coi
• b) All of these
• c) The type of fluid – perilymph or endolymph
• d) The intensity of movement of basilar fibres of cochlea

Answer : The site at the cochlear coi

Question 6 : Saltatory conduction of nerve impulse takes place through

• a) Myelinated fibre
• b) Non-myelinated fibre
• c) Grey fibres
• d) None of these

Answer : Myelinated fibre

Question 7 : Among which one of the following groups of chemicals, all are neurotransmitters?

• a) Acetylcholine, noradrenaline, dopamine
• b) Noradrenaline, somatostatin, threonine
• c) Somatostatin, serotonin, acetylcholine
• d) Glycine, dopamine, melatonin

Answer : Acetylcholine, noradrenaline, dopamine

Question 8 : The enzyme required for the conduction of nerve impulse across synapse is

• a) choline acetylase
• b) succinic dehydrogenase
• c) peroxidase
• d) ascorbic acid oxidase

Answer : choline acetylase

Question 9 : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

• a) Vitamin A
• b) Vitamin B₁
• c) Vitamin D
• d) Vitamin C

Answer : Vitamin A

Question 10 : During stress condition which of the following nerves start working?

• a) Sympathetic nerves
• b) Parasympathetic nerves
• c) Autonomic nerves
• d) Cranial nerves

Answer : Sympathetic nerves

Question 11 : The gelatinous membrane covering the sensory hair cells of the ear is known as

• a) tectorial membrane
• b) Reissner’s membrane
• c) basilar membrane
• d) neuro-sensory membrane

Answer : tectorial membrane

Question 12 : Nerve cells do not divide because they do not have

• a) centrosome
• b) mitochondria
• c) nucleus
• d) Golgi body

Answer : centrosome

Question 13 : The local depolarization of a receptor-cell membrane is called as

• a) action potential.
• b) resting potential
• c) threshold potential
• d) None of these

Answer : action potential.

Question 14 : You are sitting in biology class daydreaming. Your intrinsic heartbeat is controlled by

• a) levels of adrenaline in the blood.
• b) the medulla
• c) the cerebrum
• d) the spinal cord

Answer : levels of adrenaline in the blood.

Question 15 : The threshold of a neuron is

• a) The membrane voltage at which the membrane potential develops into an action potential
• b) the amount of excitatory neurotransmitter required to elicit an action potential
• c) The membrane voltage at which an axon potential will be suppressed
• d) The amount of inhibitory neurotransmitter required to inhibit an action potential.

Answer : The membrane voltage at which the membrane potential develops into an action potential

In This Post we are  providing Chapter-20 Locomotion and Movement NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON LOCOMOTION AND MOVEMENT

Question 1 : Which of the following is the contractile protein of a muscle?

• a) Myosin
• b) Tropomyosin
• c) Tropomyosin
• d) Actin

Answer : Myosin

Question 2 : Myofibrils are made up of

• a) All the above components
• b) Actin and tropomyosin
• c) Myosin and actin
• d) Myosin and troponin

Answer : All the above components

Question 3 :  The number of floating ribs, in the human body, is

• a) 2 pairs
• b) 5 pairs
• c) 6 pairs
• d) 3 pairs

Answer : 2 pairs

Question 4 : Synovial fluid is found in

• a) freely movable joints
• b) spinal cavity
• c) cranial cavity
• d) immovable joints

Answer : freely movable joints

Question 5 : Humerus differs from the femur in having

• a) Deltoid ridge
• b) Sigmoid notch
• c) Trochanter
• d) None of these

Answer : Deltoid ridge

Question 6 : The most abundant mineral in human body is

• a) Calcium
• b) Magnesium
• c) Sodium
• d) Potassium

Answer : Calcium

Question 7 : Ankle joint is

• a) Hinge joint
• b) Pivot Joint
• c) Ball and socket joint
• d) Gliding joint

Answer : Hinge joint

Question 8 : The major function of the intervertebral disc is to

• a) Absorb shock
• b) String the vertebrae together
• c) Prevent injuries
• d) Prevent hyperextension

Answer : Absorb shock

Question 9 : Which of the following is an autoimmune disorder ?

• a) Myasthenia gravis
• b) Muscular dystrophy
• c) Osteoporosis
• d) Gout

Answer : Myasthenia gravis

Question 10 : The joint in our neck which allows us to rotate our head left to right is

• a) pivot joint
• b) saddle joint
• c) hinge joint
• d) ellipsoid joint

Answer : pivot joint

Question 11 : A cricket player is fast chasing a ball in the field. Which one of the following groups of bones is directly contributing in this movement?

• a) Tarsals, femur, metatarsals, tibia
• b) Sternum, femur, tibia, fibula
• c) Pelvis, ulna, patella, tarsals
• d) Femur, malleus, tibia, metatarsals

Answer : Tarsals, femur, metatarsals, tibia

Question 12 : Which of the following statement is incorrect w.r.t. bone?

• a) Bone is made up of 60&70% organic matter and 30 & 40% inorganic matter
• b) If born is kept in HCl it becomes soft
• c) If bone is heated then the organic part disappears and inorganic part is retained
• d) Hydroxyapatite salts and fluorapatite salts are found in matrix

Answer : Bone is made up of 60&70% organic matter and 30 & 40% inorganic matter

Question 13 : One of the following is a location of most abundant cartilage in the human body.

• a) Tracheal rings and costal cartilages
• b) Intevertebral disc and public symphysis
• c) Pinna and tip of nose
• d) Pectoral girdle and pelvic girdle

Answer : Tracheal rings and costal cartilages

Question 14 : What is a hydrostatic skeleton largely composed of?

• a) Fluid
• b) Connective tissue
• c) Bone
• d) Cartilage

Answer : Fluid

Question 15 : The only movable bone in the skull is

• a) Mandible
• b) Ethmoid
• c) Maxilla
• d) None

Answer : Mandible

In This Post we are  providing Chapter-2 Excretory Products and Their Elimination NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON EXCRETORY PRODUCTS AND THEIR ELIMINATION

Question 1 : A person who is one along hunger strike and is surviving only on water, will have

• a) less urea in his urine
• b) more sodium in his urine
• c) more glucose in his blood
• d) less amino acids in his urine

Answer : less urea in his urine

Question 2 : Uricotelism is found in

• a) Birds, reptiles and insects
• b) Fishes and fresh water protozoans
• c) Mammals and birds
• d) Frogs and toads

Answer : Birds, reptiles and insects

Question 3: If Henle’s loop were absent from mammalian nephron which of the following is to be expected?

• a) The urine will be more dilute
• b) The urine will be more concentrated
• c) There will be no urine formation
• d) None of these

Answer : The urine will be more dilute

Question 4 :  The basic functional unit of the human kidney is

• a) nephron
• b) pyramid
• c) nephridia
• d) Henle’s loop

Answer : nephron

Question 5 : Reabsorption of water in distal parts of kidney tubules/urine formation is controlled by

• a) vasopressin
• b) calcitonin
• c) relaxin
• d) oxytocin

Answer : vasopressin

Question 6 : In mammals, the urinary bladder opens into

• a) Urethra
• b) Uterus
• c) Vestibule
• d) Ureter

Answer : Urethra

Question 7 : Urea from the blood can be removed by

• a) Dialysis
• b) Uremia
• c) Diuresis
• d) Micturition

Answer : Dialysis

Question 8 : Which of the following components of blood does not enter into the nephron?

• a) plasma protein
• b) water
• c) urea
• d) glucose

Answer : plasma protein

Question 9 : The condition of excess urea in blood is known as

• a) Uraemia
• b) Polyuria
• c) Haematuria
• d) None of these

Answer : Uraemia

Question 10 : Atrial natriuretic factor (ANF) is released in response to the increase in blood volume and blood pressure. Which of the following is not the function of ANF?

• a) Stimulates aldosterone secretion
• b) Inhibits the release of renin from JGA
• c) Stimulates salt loss in urine
• d) Inhibits sodium reabsorption from collecting duct

Answer : Stimulates aldosterone secretion

Question 11 : Reabsorption of chloride ions from glomerular filtrate in kidney tubule occurs by

• a) Diffusion
• b) Brownian movement
• c) Osmosis
• d) Active transport

Answer : Diffusion

Question 12 : Metanephric kidneys are found in

• a) All of these
• b) Birds only
• c) Reptiles only
• d) mammals only

Answer : All of these

Question 13 : In Prawn, excretion is carried out by

• a) Green glands
• b) Malpighian tubules
• c) Nephrons
• d) Flame cells

Answer : Green glands

Question 14 : By definition, an ectotherm

• a) obtains most of its heat from its environment.
• b) derives most of its heat from its own metabolism
• c) is warm-blooded
• d) is cold-blooded

Answer : obtains most of its heat from its environment.

Question 15 : Which region of the kidney nephron is the main site of amino acid reabsorption?

• a) proximal convoluted tubule
• b) distal convoluted tubule
• c) Bowman’s capsule
• d) glomerulus

Answer : proximal convoluted tubule

In This Post we are  providing Chapter-18 Body Fluids and Circulation NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON BODY FLUIDS AND CIRCULATION

Question 1.
In developing embryo RBCs are formed in
(a) Lymph node
(b) Bone marrow
(c) Liver
(d) Spleen

Answer: (c) Liver

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Question 2.
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
(a) Pressure difference between the post caval and atrium
(b) Pushing open of the venous valves
(c) Suction pull
(d) Stimulation of the Sino auricular node

Answer: (a) Pressure difference between the post caval and atrium

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Question 3.
When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release
(a) Fibrinogen
(b) Thrombin
(c) Prothrombin
(d) Thromboplastin

Answer: (d) Thromboplastin

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Question 4.
An adult human has systolic and diastolic pressures as:
(a) 80 mm Hg and 120 mm Hg
(b) 120 mm Hg and 80 mm Hg
(c) 50 mm Hg and 80 mm Hg
(d) 80 mm Hg and 80 mm Hg

Answer: (b) 120 mm Hg and 80 mm Hg

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Question 5.
Duration of cardiac cycle is
(a) 0.7 sec
(b) 0.9 sec
(c) 0.8 sec
(d) 0.11 sec

Answer: (c) 0.8 sec
Explanation:
Duration of cardiac cycle is 0.8 seconds.

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Question 6.

In the above picture Q represents
(a) excitation of the atria
(b) depolarization of ventricles
(c) beginning of systole
(d) repolarization

Answer: (c) beginning of systole
Explanation:

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Question 7.
Oxygenated blood occurs in
(a) Pulmonary artery
(b) Right atrium
(c) Right ventricle
(d) Pulmonary vein

Answer: (d) Pulmonary vein

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Question 8.
The cells lining the blood vessels belong to the category of
(a) Columnar epithelium
(b) Connective tissue
(c) Smooth muscle tissue
(d) Squamous epithelium

Answer: (d) Squamous epithelium

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Question 9.
Heart failure occurs due to
(a) heart stops beating
(b) damage of heart muscles
(c) congestion of lungs
(d) all of the above

Answer: (c) congestion of lungs
Explanation:
Heart failure occurs when heart stops pumping blood effectively enough to meet the body needs.
It occurs mainly due to congestion of lungs.

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Question 10.
Artificial pace maker is transplanted in
(a) Inter auricular septum
(b) Below the collar bone
(c) Inter ventricular septum
(d) Right auricle

Answer: (b) Below the collar bone

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Question 11.
Which of the following statement/statements can be related to erythroblastosis foetalis?
(a) Severe anemia and jaundice to the baby.
(b) Can be avoided by giving anti-Rh antibodies to mother immediately after delivery of the first child.
(c) Rh-antibodies from the Rh -ve mother destroys foetal RBCs.
(d) All of the above

Answer: (d) All of the above
Explanation:
Erythroblastosis fetalis occurs if Rh-antibodies from the Rh -ve mother destroys foetal RBCs of Rh +ve foetus.

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Question 12.
Among the following stem cells, which are found in the umbilical cord?
(a) Cord blood stem cells
(b) Adult stem cells
(c) Embryonic stem cells
(d) All of the above

Answer: (a) Cord blood stem cells

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Question 13.
If vagus nerve is cut the heart beat
(a) increases
(b) decreases
(c) will not be affected
(d) will stop immediately

Answer: (a) increases

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Question 14.
If due to some injury the chordae tendinea of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
(a) The flow of blood into the pulmonary artery will be reduced
(b) The flow of blood into the aorta will be slowed down
(c) The pacemaker will stop working
(d) The blood will tend to flow back into the left atrium

Answer: (a) The flow of blood into the pulmonary artery will be reduced

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Question 15.
Heparin is
(a) Anti-allergic
(b) Blood diluter
(c) Anticoagulant
(d) Antiseptic

Answer: (c) Anticoagulant

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In This Post we are  providing Chapter-17 Breathing and Exchange of Gases NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON BREATHING AND EXCHANGE OF GASES

Question 1 : When CO₂ concentration in blood increases, breathing becomes

• a) faster and deeper
• b) slow and deep
• c) there is no effect on breathing
• d) shallower and slow

Answer : faster and deeper

Question 2 : The largest quantity of air that can be expired after a maximal inspiratory effort is called

• a) vital capacity
• b) residual volume
• c) tidal volume
• d) total lung volume

Answer : vital capacity

Question 3 : Which one of the following statements is incorrect ?

• a) In insects, circulating body fluids serve to distribute oxygen to tissues
• b) The principle of counter current flow facilitates efficient respiration in gills of fishes
• c) The residual air in lungs slightly decreases the efficiency of respriration in mammals.
• d) None of these

Answer : In insects, circulating body fluids serve to distribute oxygen to tissues

Question 4 : Emphysema develops mainly because of

• a) Spasm of the smooth muscles of bronchioles
• b) Cigarette smoking
• c) Inflammation of the alveoli
• d) Allergy or hypersensitisation

Answer : Spasm of the smooth muscles of bronchioles

Question 5 : During inspiration the diaphragm

• a) contracts and flattens
• b) relaxes to become dome-shaped
• c) shows no change
• d) None of these

Answer : contracts and flattens

Question 6 : The volume of air breathed in and out during normal breathing is called

• a) Tidal volume
• b) Explratory reserve volume
• c) Vital capacity
• d) None of these

Answer : Tidal volume

Question 7 : What would happen if human blood becomes acidic (low pH)

• a) Oxygen carrying capacity of haemoglobin decreases
• b) RBCs count increases
• c) RBCs count decreases
• d) Oxygen carying capacity of haemoglobin increases

Answer : Oxygen carrying capacity of hemoglobin decreases

Question 8 : Even when there is no air in it, human trachea does not collapse due to presence of

• a) Cartilaginous rings
• b) Turgid pressure
• c) Bony rings
• d) Chitinous rings

Answer : Cartilaginous rings

Question 9 : The structure which does not contribute to the breathing movements in mammals is

• a) Larynx
• b) Diaphragm
• c) Ribs
• d) Intercostal muscles

Answer : Larynx

Question 10 : In emphysema

• a) Gas exchange area of lungs is reduced
• b) Gas exchange area of lungs is increased
• c) Trachea gets narrowed
• d) Larynx is permanently closed

Answer : Gas exchange area of lungs is reduced

Question 11 : Which of the following changes occur in diaphragm and intercostal muscles when expiration of air takes place?

• a) External intercostal muscles and diaphargm relax
• b) External intercostal muscles and diaphargm contract
• c) External intercostal muscles contract and diaphargm relaxes
• d) External intercostal muscles relax and diaphargm contracts

Answer : External intercostal muscles and diaphragm relax

Question 12 : When you exhale, the diaphragm

• a) relaxes and arches
• b) relaxes and flattens.
• c) contracts and arches
• d) contracts and flattens

Answer : relaxes and arches

Question 13 : Smoking destroys the cilia in the respiratory passageways. This

• a) makes it harder to keep the lungs clean
• b) slows blood flow through lung blood vessels
• c) decreases the surface area for respiration.
• d) makes it harder to move air in and out of the lungs

Answer : makes it harder to keep the lungs clean

Question 14: Gas flows into the lungs of mammals during inspiration because

• a) The pressure in the lungs falls below atmospheric pressure
• b) The pressure in the lungs rises above atmospheric pressure.
• c) The volume of the lungs decreases
• d) The diaphragm moves upward toward the lungs

Answer : The pressure in the lungs falls below atmospheric pressure

Question 15 : The function of the mucus elevator in the mammalian respiratory system is to

• a) trap and remove particulate matter that has entered the respiratory system.
• b) stimulate contraction of rib musculature during forcible exhalation
• c) produce negative pressure during inhalation
• d) move surfactant from the bronchi to the alveoli

Answer : trap and remove particulate matter that has entered the respiratory system.

In This Post we are  providing Chapter-16 Digestion and Absorption NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON DIGESTION AND ABSORPTION

Question 1 : Jaundice is a disorder of

• a) Digestive system
• b) Excretory system
• c) Skin and eyes
• d) Circulatory system

Answer : Digestive system

Question 2 : Which one of the following pairs of food components in humans reaches the stomach totally undigested ?

• a) Fat and cellulose
• b) Protein and starch
• c) Starch and cellulose
• d) Starch and fat

Answer : Fat and cellulose

Question 3 : Which of following teeth are lophodont?

• a) Premolar and molar
• b) Premolar and incisor
• c) Incisor and canine
• d) Canine and premolar

Answer : Premolar and molar

Question 4 : Oxyntic cells are located in

• a) Gastric epithelium and secrete HCl
• b) Kidneys and secrete renin
• c) Gastric epithelium and secrete pepsin
• d) Islets of Langerhans

Answer : Gastric epithelium and secrete HCl

Question 5 : Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to

• a) hypercholesterolemia
• b) urine laden with ketone bodies
• c) kidney stones
• d) vitamin A toxicity

Answer : hypercholesterolemia

Question 6 : Which one of the following is a matching pair of a substrate and its particular digestive enzyme?

• a) Starch — maltase
• b) Maltose — steapsin
• c) Lactose — rennin
• d) Casein — chymotrypsin

Answer : Starch — maltase

Question 7 : Which one of the following is a matching pair of a vitamin and the deficiency disease related with it ?

• a) Niacin — pellagra
• b) Calciferol — scurvy
• c) Thiamine — xerophthalmia
• d) Riboflavin — beri beri

Answer : Niacin — pellagra

Question 8 : Which one of the following pairs of the cells with their secretion is correctly matched?

• a) Oxyntic cells – A secretion with pH between 2.0 and 3.0.
• b) Alpha cells of Islets of Langerhans -Secretion that decreases blood sugar level.
• c) Kupffer cells – A digestive enzyme that hydrolysis nucleic acids.
• d) None of these

Answer : Oxyntic cells – A secretion with pH between 2.0 and 3.0.

Question 9 : “Kwashiorkor’ and ‘Beri-Beri’ are

• a) deficiency diseases
• b) infectious diseases
• c) communicable diseases
• d) None of the above

Answer : Deficiency diseases

Question 10 : First milk produced after child birth is called

• a) colostrum
• b) cerumen
• c) true milk
• d) sebum

Answer :  Colostrum

Question 11 : Cirrhosis of liver is caused by the chronic intake of

• a) Alcohol
• b) Tobacco (Chewing)
• c) Cocaine
• d) Opium

Answer : Alcohol

Question 12 : The sphincter of Oddi is present between

• a) Hepatopancreatic duct and duodenum
• b) Hepatic duct and cystic duct
• c) Pyloric stomach and duodenum
• d) Oesophagus and cardiac stomach

Answer : Hepatopancreatic duct and duodenum

Question 13 : Layer of cells that secrete enamel of tooth is

• a) Ameloblast
• b) Dentoblast
• c) Osteoblast
• d) Odontoblast

Answer : Ameloblast

Question 14 : Cow’s milk is slightly yellowish in colour due to the presence of

• a) Riboflavin
• b) Xanthophyll
• c) Xanthophyll and Carotene
• d) Carotene

Answer : Riboflavin

Question 15 : Accessory excretory organs of man are

• a) skin, lungs, liver and intestine
• b) only skin and lungs
• c) only skin and liver
• d) only skin

Answer : skin, lungs, liver and intestine