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MCQ Chapter 15 Biology Class 11 Maharashtra Board

Excretion and Osmoregulation

1. What is the primary excretory organ in insects?

Question 1 of 20

2. Where are kidneys located in the human body?

Question 2 of 20

3. What is the average weight of a male kidney?

Question 3 of 20

4. What prevents the backflow of urine in the urinary bladder?

Question 4 of 20

5. What is the innermost layer of the kidney called?

Question 5 of 20

6. What is the functional unit of the kidney?

Question 6 of 20

7. What is the name of the cup-like structure in the nephron?

Question 7 of 20

8. What creates high hydrostatic pressure in the glomerulus?

Question 8 of 20

9. What is the primary function of the proximal convoluted tubule (PCT)?

Question 9 of 20

10. Which part of the nephron is impermeable to water?

Question 10 of 20

11. What is the role of the juxtaglomerular apparatus (JGA)?

Question 11 of 20

12. What is the effective filtration pressure (EFP) in the glomerulus if glomerular hydrostatic pressure is 55 mm Hg?

Question 12 of 20

13. What is the rate of glomerular filtration?

Question 13 of 20

14. Which substances are actively reabsorbed in the PCT?

Question 14 of 20

15. Where does tubular secretion primarily occur?

Question 15 of 20

16. What hormone makes the collecting duct permeable to water?

Question 16 of 20

17. What is the osmolarity of concentrated urine compared to blood?

Question 17 of 20

18. What is the role of vasa recta in the countercurrent mechanism?

Question 18 of 20

19. What detects changes in blood osmolarity?

Question 19 of 20

20. What condition results from the absence of ADH?

Question 20 of 20


 

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