Which one of the following options gives the correct categorization of six animals according to the type of nitrogenous wastes (A, B, C) they give out?

Which one of the following characteristics is common in both humans and adult frogs?
1.  Internal fertilization
2.  Nucleated RBCs
3.  Ureotelic mode of excretion
4.  Four-chambered heart

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

In which one of the following organisms its excretory organs are correctly stated?
 

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

1. man 

2. earthworm

3. cockroach

4. frog

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

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

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

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