WAEC Past Questions and Answers - Page 3846

19,226.

Secondary growth is brought about by the activities of the

A.

phellogen and phelloderm

B.

phellogen and procambium

C.

vascular cambium and phelloderm

D.

vascular cambium and phellogen

Correct answer is D

No explanation has been provided for this answer.

19,227.

Cells that utilise a lot of energy are characterized by the presence of a large number of

A.

vacuoles

B.

mitochondria

C.

endoplasmic reticulum

D.

ribosomes

Correct answer is B

No explanation has been provided for this answer.

19,228.

The following processes are involved in water movement in the endodermis except

A.

osmosis

B.

vacuolar pathway

C.

diffusion

D.

active transport

Correct answer is C

No explanation has been provided for this answer.

19,229.

In which of the following habitats is Paramecium not found?

A.

Pond

B.

Aquarium

C.

Lake

D.

Puddle

Correct answer is B

No explanation has been provided for this answer.

19,230.

In any economic system, which of the following is not an economic problem?

A.

What goods and services to produce

B.

For whom to produce goods or services

C.

What techniques of production to be adopted

D.

Equal distribution of goods and services

E.

How to ensure that the economy grow over time

Correct answer is D

No explanation has been provided for this answer.