Excretory Product And Their Elimination

Question 1

What are the major forms of nitrogenous waste?

Answer 1

Ammonia, urea, uric acid

Question 2

Which are the waste that require more water and less water?

Answer 2

Ammonia - more water, uric acid - less water

Question 3

What is ammonotelism?

Answer 3

The process of excretion of ammonia

Question 4

Which are ureotelic animals?

Answer 4

Mammals, terrestrial amphibian and marine fish that mainly excrete urea.

Question 5

Which are uricotelic animals?

Answer 5

Reptiles, birds and insects which excrete waste as uric acid in the form of pellet or paste.

Question 6

Name the excretory organs of the following:
1. Flatworms like planaria
2. Earthworm
3. Cockroach
4. Prawns
5. Amoeba proteins

Answer 6

1. Protonephridia or flame cells.
2. Nephridia.
3. Malpighian tubules
4. Antennary gland or green gland
5. Plasma membrane