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