NCERT Class 11 Chapter 19 Biology Excretory Products and Their MCQ

NCERT Class 11 Chapter 19 Biology Excretory Products and Their MCQ | Questions & Answers: Students of Class 11 can make use of the Multiple Choice Questions & Answers that we have provided here regarding NCERT Class 11 Chapter 19 Biology Excretory Products and Their Concept. Now, without any delay take up the quiz and know the marks you have scored.

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1. Proximal and distal convoluted tubules are parts of

A. Nephron

B. Oviduct

C. Vas deferens

D. Seminiferous tubules

2. Antidiuretic hormone

A. All the above

B. Is secreted by nerve cells with their cell bodies in the hypothalamus

C. Increases permeability of renal collecting duct cells to water

D. Secretion is determined by plasma osmolarity

3. Which one of the following is correctly matched pair of the given secretion and its primary role in human physiology?

A. Sweat — Thermoregulation

B. Saliva — Tasting food

C. Tears — Excretion of salts

D. Sebum — Sexual attraction

4. 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

5. Uricotelism is found in

A. Birds, reptiles and insects

B. Fishes and fresh water protozoans

C. Mammals and birds

D. Frogs and toads

6. 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

7. The basic functional unit of the human kidney is

A. nephron

B. pyramid

C. nephridia

D. Henle’s loop

8. Reabsorption of water in distal parts of kidney tubules/urine formation is controlled by

A. vasopressin

B. calcitonin

C. relaxin

D. oxytocin

9. In mammals, the urinary bladder opens into

A. Urethra

B. Uterus

C. Vestibule

D. Ureter

10. Urea from the blood can be removed by

A. Dialysis

B. Uremia

C. Diuresis

D. Micturition

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11. Which of the following components of blood does not enter into the nephron?

A. plasma protein

B. water

C. urea

D. glucose

12. The condition of excess urea in blood is known as

A. Uraemia

B. Polyuria

C. Haematuria

D. None of these

13. Atrial natriuretic factor (ANF) is released in response to the increase in blood volume and blood pressure. Which of thefollowing 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

14. Reabsorption of chloride ions from glomerular filtrate in kidney tubule occurs by

A. Diffusion

B. Brownian movement

C. Osmosis

D. Active transport

15. Metanephric kidneys are found in

A. All of these

B. Birds only

C. Reptiles only

D. mammals only

16. In Prawn, excretion is carried out by

A. Green glands

B. Malpighian tubules

C. Nephrons

D. Flame cells

17. 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

18. 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

19. The sole mechanism for water reabsorption by the renal tubules is

A. osmosis.

B. active transport

C. cotransport with sodium ions

D. cotransport with bicarbonate ions

20. The appearance of albumin in the urine is most likely due to

A. Damage to the Malpighian corpuscles

B. Decrease in the blood osmotic corpuscles

C. Increase in the blood pressure

D. Damage to the proximal convoluted tubules

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21. Reabsorption of useful substances from glomerular filtrate occurs in

A. collecting tube

B. loop of Henle

C. proximal convoluted tubule

D. distal convoluted tubule

22. Proximal and distal convoluted tubules are parts of

A. seminiferous tubules

B. nephron

C. oviduct

D. vas deferens

23. Under normal conditions which one is completely reabsorbed in the renal tubule?

A. Urea

B. Uric acid

C. Salts

D. Glucose

24. Nitrogenous waste products are eliminated mainly as

A. urea in tadpole and ammonia in adult frog

B. ammonia in tadpole and urea in adult frog

C. urea in both tadpole and adult frog

D. urea in tadpole and uric acid in adult frog

25. Glucose is taken back from glomerular filtrate through

A. active transport

B. passive transport

C. osmosis

D. diffusion