Kidney matrix retains some amount of urea to

1. Maintain a desired osmolarity

2. Maintain metabolism

3. Maintain balance of the body

4. Maintain micturition

Which of the following is not uricotelic?

1. Reptiles

2. Birds

3. Land snails

4. All insects

The invertebrates have which of the following excretory structures?

1. Simple Tubular forms

2. Complex tubular organs

3. Kidneys

4. Interstitial lamina

Which of the following has not the protonephridia as an excretory organ?

1. Rotifers

2. Amphioxus

3. Planaria

4. Earthworm

Which of the following is not the primary function of protonephridia?

1. Ionic volume regulation

2. Fluid volume regulation

3. Osmoregulation

4. Excretion

Annelids have which of the following excretory organs?

1. Nephridia

2. Protonephridia

3. Flame cells

4. All of these

Excretory function of crustacea is performed by

1. Antennal glands

2. Green glands

3. Both A and B

4. Malpighian tubules

The insects, cockroach will have which of the following excretory structures?

1. Malpighian body

2. Malpighian corpuscles

3. Malpighian capsule

4. Malpighian tubules

Human excretory system does not involve

1. Urethra

2. Vestibule

3. Bladder

4. Kidneys

Kidneys are situated in

1. Between the last thoracic and 5th lumbar vertebra

2. Between the last thoracic and 3rd lumbar vertebra

3. Between the last thoracic and 2nd lumbar vertebra

4. Between the last thoracic and first lumbar vertebra