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

Question 41:

• JAMB 1985

The vein which returns blood from the head and arms to the heart is called

A. Aorta
B. Inferior vena cava
C. Superior vena cava
D. Pulmonary vein
E. Pulmonary artery

Question 42:

• JAMB 1985

Blood platelets are important because they are

A. Amoeboid and nucleated
B. Produce antitoxins
C. Produce antibodies
D. Digest harmful bacteria
E. Release thrombin for blood clothing

Question 43:

• JAMB 1986

The hormones which regulates the amount of glucose in the blood is called

A. Adrenalin
B. Auxin
C. Insulin
D. Thyroxine

Question 44:

• JAMB 1987

The vitamin which is important in the formation of the retina pigment is

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D

Question 45:

• JAMB 1987

A severe deficiency of thyroxin results in

A. Diabetes mellitus
B. Sexual underdevelopment
C. Cretinism
D. Gigantism