Biology 12 Chapter 15 Homeostasis - 7

Biology 12 Chapter 15 Homeostasis - 7

1. What is the characteristic called by which desert mammals can tolerate against strong dehydration?

a) Osmoregulation.
b) Excretion.
c) Anhydrobiosis.
d) Homeostasis.

2. Which one has characteristic of Anhydrobiosis?

a) Marine iguana.
b) Kangaroo rat.
c) Myxine.
d) Horned lizard.

3. The removal of waste products from the body is called?

a) Excretion.
b) Osmoregulation.
c) Homeostasis.
d) Thermoregulation.

4. The nitrogenous excretory products of animals are……..?

a) Urea.
b) Ammonia.
c) All of these.
d) Uric acid.

5. 1 gm of Nitrogen (in the form of ammonia) requires ……………. ml of water to dissolve it to non-toxic level?

a) 1000 ml.
b) 100 ml.
c) 750 ml.
d) 500 ml.

6. What are the animals called which secrete ammonia as their major waste product?

a) Ammonotelic.
b) Ureotelic.
c) None of these.
d) Uricotelic.

7. Approx. ……..of uric acid is excreted in urine per day?

a) 1 gm.
b) 0 gm.
c) 2 gm.
d) 0.5 gm.

8. 1 gm of Nitrogen (in the form of urea) requires ……………. ml of water to dilute it to non-toxic level?

a) 10 ml.
b) 50 ml.
c) 100 ml.
d) 75 ml.

9. 1 gm of Nitrogen (in the form of uric acid) requires ……………. ml of water to dilute it to non-toxic level?

a) 20 ml.
b) 15 ml.
c) 1 ml.
d) 10 ml.

10. What are the animals called which secrete urea as their major waste product?a) Ureotelic.
b) Uricotelic.
c) Ammonotelic.
d) None of these.

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