WAEC Past Questions and Answers - Page 4167

20,831.

Which of the following is the unit of transmission of hereditary traits in living organisms

A.

Nucleus

B.

Nucleolus

C.

Gametes

D.

Genes

E.

Chromosomes

Correct answer is D

No explanation has been provided for this answer.

20,832.

which of the following will be the effect of waterlogged top soil on the roots of plants?

A.

the waterlogged soil will stimulate rapid growth of roots

B.

there will be abundant supply of air for the growth of roots

C.

The roots will rapidly absorb water

D.

There willl be an accumulation of plant nutrients

E.

the roots will be starved of air

Correct answer is E

No explanation has been provided for this answer.

20,833.

The number of individuals in a habitat in relation to the unit space available to each organism is referred to as the

A.

birth rate

B.

density

C.

mortality

D.

frequency

E.

dispersion

Correct answer is B

No explanation has been provided for this answer.

20,834.

fewer number of trees is characteristic of the Savanna zones of Nigeria because

A.

there is too much sunlight

B.

there is limited amount of rainfall

C.

they are usually exposed to grazing animals

D.

they are covered by high mountains

E.

the farmers always engage in bush-burning

Correct answer is B

No explanation has been provided for this answer.

20,835.

Which of the following would be the primary producer in a food chain?

A.

Saprophytes

B.

Herbivores

C.

Carnivores

D.

Green plants

E.

Parasites

Correct answer is D

No explanation has been provided for this answer.