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
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