JAMB Biology Past Questions & Answers - Page 377

1,881.

When freshly tapped palm wine was kept overnight it was found to be more alcoholic. This effect must have been due to

A.

the addition of saccharin

B.

the addition of sugar

C.

the addition of whisky or local gin

D.

some complex hydrolytic reaction

E.

anaerobic respiration of an organism

Correct answer is E

No explanation has been provided for this answer.

1,882.

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

Correct answer is D

No explanation has been provided for this answer.

1,883.

Treatment of a poor soil with lime supplies

A.

Sulphur

B.

Calcium

C.

Phosphorus

D.

Sodium

E.

Nitrogen

Correct answer is B

Treating the soil with lime is to improve the calcium content of the soil. It provides a source of calcium and magnesium for plants.

1,884.

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

Correct answer is C

No explanation has been provided for this answer.

1,885.

Exponential increase in the population of an organism is a characteristic feature of

A.

binary fission

B.

sexual reproduction

C.

budding

D.

vegetative propagation

Correct answer is A

No explanation has been provided for this answer.