Question 1

Which of the following animals is ammonotelic?

Accepted Answer

Bony fishes, aquatic amphibians, and aquatic insects are ammonotelic, meaning they excrete ammonia as their primary nitrogenous waste because they live in an environment where large amounts of water are available to dilute the highly toxic ammonia.

Question 2

Uricotelically excreted waste is characteristic of:

Accepted Answer

Reptiles, birds, land snails, and insects are uricotelically excreted, meaning they excretes nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water.

Question 3

Human kidneys are situated between the levels of which vertebrae?

Accepted Answer

Our kidneys are reddish brown, bean-shaped structures situated between the levels of last thoracic and third lumbar vertebra close to the dorsal inner wall of the abdominal cavity.

Question 4

The functional unit of the human kidney is:

Accepted Answer

Each kidney has nearly one million complex tubular structures called nephrons, which are the functional units of the kidney.

Question 5

A tuft of capillaries enclosed in Bowman's capsule is called:

Accepted Answer

Malpighian corpuscle consists of a tuft of capillaries called glomerulus and Bowman's capsule that encloses the glomerulus.

Excretory Products and Their Elimination