Nitrogenous Excretory Products

Earthworms are:

1. ureotelic when plenty of water is available

2. uricotelic when plenty of water is available

3. uricotelic under conditions of water scarcity

4. ammonotelic when plenty of water is available

A person who is on a long hunger strike and is surviving only on water, will have:

1. more sodium in his urine

2. less amino acids in his urine

3. more glucose in his blood

4. less urea in his urine

Consider the following four statements (A-D) about certain desert animals such as kangaroo rats:

A.	they have a dark colour and a high rate of reproduction and excrete solid urine.
B.	they do not drink water, breathe at a slow rate to conserve water, and have their body covered with thick hairs.
C.	they feed on dry seeds and do not require drinking water.
D.	they excrete very concentrated urine and do not use water to regulate body temperature.

Which two of the above statements for such animals are true?

1.	C and D	2.	B and C
3.	C and A	4.	A and B

Uric acid is the chief nitrogenous component of the excretory products of:

1. man

2. earthworm

3. cockroach

4. frog

The principal nitrogenous excretory compound in humans is synthesised:
1. in kidneys but eliminated mostly through liver
2. in kidneys as well as eliminated by kidneys
3. in liver and also eliminated by the same through bile
4. in the liver, but eliminated mostly through kidneys

Nitrogenous waste is excreted in the form of pellet or paste by:

1.	Pavo	2.	Ornithorhynchus
3.	Salamandra	4.	Hippocampus