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MCQ Chapter 15 Biology Class 11 Maharashtra Board

Excretion and Osmoregulation

1. What is the primary purpose of excretion in the body?

Question 1 of 20

2. Which of the following is a gaseous waste product excreted by the body?

Question 2 of 20

3. Which pigment is excreted through faeces due to the breakdown of haemoglobin?

Question 3 of 20

4. Why does urine appear deeply coloured?

Question 4 of 20

5. What causes bad breath after consuming garlic or onion?

Question 5 of 20

6. Why are excess amino acids broken down in the body?

Question 6 of 20

7. What is the process of separating the amino group from an amino acid called?

Question 7 of 20

8. Which type of nitrogenous waste is the most toxic?

Question 8 of 20

9. Which animals are typically ammonotelic?

Question 9 of 20

10. How much water is required to eliminate 1 gram of ammonia?

Question 10 of 20

11. Which excretory product requires the least amount of water for elimination?

Question 11 of 20

12. Which animals are typically ureotelic?

Question 12 of 20

13. What is the name of the cycle that converts ammonia to urea in the liver?

Question 13 of 20

14. Why do sharks retain more urea in their blood?

Question 14 of 20

15. Which animals excrete guanine as a nitrogenous waste?

Question 15 of 20

16. What is the primary source of creatinine in the body?

Question 16 of 20

17. Why is creatinine used as an index of kidney function?

Question 17 of 20

18. Why do we produce less urine during summer?

Question 18 of 20

19. What type of organisms are marine birds like albatrosses in terms of osmoregulation?

Question 19 of 20

20. Which organisms can tolerate a wide range of salt concentrations?

Question 20 of 20


 

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