Jamb Biology Past Questions and Answers

Question 621:

• JAMB 1989

The irreversible life process by which new protoplasm is added to increase the size and weight of an organism can be termed

A. Anabolism
B. Catabolism
C. Growth
D. Development

Question 622:

• JAMB 1989

Fruit enlargement can be induced by spraying young ovary with

A. Cytokinin, abscisic acid and ethylene
B. Gibberellin, ethylene and abscisic acid
C. Auxin, abscisic acid and ethylene
D. Auxin, cytokinin and gibberellin

Question 623:

• JAMB 1989

A fundamental similarity between nervous and hormonal system is that both

A. Involve chemical transmission
B. Have widespread effects
C. Shed chemicals into the blood stream
D. Evoke rapid responses

Question 624:

• JAMB 1989

The region that control most of the unconscious processes of a mammalian body is the

A. Cerebellum
B. Cerebrum
C. Spinal cord
D. Medulla oblongata

Question 625:

• JAMB 1989

During cell division, the two strands of chromosomes are joined at a point called

A. Spindle
B. Chromatid
C. Centromere
D. Aster