WAEC Past Questions and Answers - Page 4120

20,596.

Which of the following is a method of artificial vegetative propagation? 

A.

Creeping stem

B.

Layering

C.

Corm

D.

Rhizome

E.

Bulbil

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

20,597.

The pressure of a fixed mass of gas is 2.0 x 105Nm-2 at a known temperature. Assuming that the temperature remains constant, what will be the pressure of the gas if its volume is halved?

A.

1.0x105Nm-2

B.

2.0X105Nm-2

C.

3.0x105Nm-2

D.

4.0 x105Nm-2

E.

5.0 x105Nm-2

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

20,598.

Which of the following can be used for vegetative propagation?

A.

Ginger stem

B.

Yam leaf

C.

Plantain roots

D.

Sweet potato tuber

E.

Carrot root

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

20,599.

Which of the following is a difference between mitosis and meiosis?

A.

Alignment of chromosomes along the equitorial plane

B.

Replication of the chromosomes and the cell organelles

C.

Pairing of homologous chromosomes

D.

Formation of spindle fibers

E.

Thickening of chromatin threads at prophase

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

20,600.

The linear expansivity of a metal P is twice that of another metal Q. When these materials are heated through the same temperature change, their increase in length is the same. Calculate the ratio of the original length of P to that of Q

A.

1:4

B.

1:2

C.

2:1

D.

4:1

E.

6:1

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.


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