Which one of the following is not a part of a renal pyramid?

1. Convoluted tubules

2. Collecting ducts

3. Loops Henle

4. Peritubular capillaries

Uricotelic mode of passing out nitrogenous wastes is found in

1. birds and annelids

2. amphibians and reptiles

3. insects and amphibians 

4. reptiles and birds 

Which one of the following statements is correct with respect to kidney function

regulation?

1. Exposure to cold temperatures stimulates ADH release

2. An increase in glomerular blood flow stimulates the formation of angiotensin II

3. During summer when the body loses a lot of water by evaporation, the release of ADH is

suppressed

4. When someone drinks a lot of water ADH release is suppressed

Which one of the following statements in regard to excretion by the human kidneys is correct?

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

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

1. man                             

2. earthworm

3. cockroach                     

4. frog

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

Angiotensinogen is a protein produced and secreted by:

1. Macula densa cells

2. Endothelial cells (cells lining the blood vessels)

3. Liver cells

4. Juxtaglomerular (JG) cells

In the presence of vasopressin, the greatest fraction of filtered water is absorbed in 

1. Loop of Henle

2. Proximal convoluted tubule

3. distal convoluted tubule

4. collecting tubule

Trimethylamine oxide is an excretory product in

1. fresh water teleosts

2. marine teleosts

3. marine invertebrate

4. none of these.