JAMB Biology Past Questions & Answers - Page 257

1,281.

The role of the male adult honey bee is to

A.

clean the hive

B.

ventilate the hive

C.

mate with the queen

D.

care for the young

Correct answer is C

No explanation has been provided for this answer.

1,282.

The stem of a typical aqautic plant usually has many

A.

air cavities

B.

intercellular space

C.

water cavities

D.

water conducting cells

Correct answer is A

No explanation has been provided for this answer.

1,283.

Darwin is considered the first scientist who correctly explained the theory of

A.

special creation

B.

spontaneous generation

C.

use and disuse

D.

organic evolution

Correct answer is D

No explanation has been provided for this answer.

1,284.

In man, the ability to roll the tongue is a variation classified as

A.

anatomical

B.

physiological

C.

structural

D.

morphological

Correct answer is B

No explanation has been provided for this answer.

1,285.

A tall plants crossed with a dwarf one produces offspring of which half are tall and half are dwarf. What are the genotypes of the parents?

A.

TT, TT

B.

Tt, tt

C.

TT, tt

D.

Tt, Tt

Correct answer is B

The parents' genotypes are: Heterozygous Tall ( Tt ) and Homozygous for  Dwarfism ( tt ).