FORM AND FUNCTIONS - Jamb Biology Past Questions and Answers

Question 356:

• 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 357:

• 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 358:

• 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 359:

• JAMB 1989

In an ecosystem, the LEAST efficient energy transfer link is from

A. Producers to primary consumers
B. Sun to producers
C. Primary consumers to secondary consumers
D. Secondary consumers to decomposers

Question 360:

• JAMB 1989

Which of the following is a dangerous product of coal burning?

A. Sulphur dioxide
B. Carbon dioxide
C. Carbon
D. Nitrogen