Co-ordination and control - Jamb Biology Past Questions and Answers

Question 71:

• JAMB 1993

The main function of blood in mammals is to transport

A. Excretory materials from tissues
B. Carbondioxide from lungs to tissues
C. Digested food from all the body tissues
D. Oxygen to the lungs

Question 72:

• JAMB 1993

Members of the phylum protozoa use the contractile vacuole

A. To remove excess food
B. For movement
C. For digestion
D. To remove excess water

Question 73:

• JAMB 1993

The response shown by the tips of the root and shoot of a plant to the stimulus of gravity is

A. Haptotropism
B. Phototropism
C. Hydrotropism
D. Geotropism

Question 74:

• JAMB 1993

In the mammal, the autonomic nervous system consists of

A. Sympathetic and parasympathetic system
B. Brain and spinal nerves
C. Brain and cranial nerves
D. Spinal cord and spinal nerves

Question 75:

• JAMB 1993

When it is cold, the blood vessels of the skin

A. Dilates to increase the amount of blood flowing
B. Constrict to reduced the amount of blood flowing to the skin
C. Dilate to reduce the amount of blood flowing to the skin
D. Constrict to increase the amount of blood flowing to the skin