WAEC Biology Past Questions & Answers - Page 35

171.

The first stable product of photosynthesis is

A.

starch

B.

fructose

C.

glucose

D.

sucrose

Correct answer is A

No explanation has been provided for this answer.

172.

Oxygen comes out of the stomata during photosynthesis through the process known as 

A.

diffusion

B.

transpiration pull

C.

osmosis

D.

active transport

Correct answer is A

No explanation has been provided for this answer.

173.

The reagent used in testing for carbon (IV) oxide is 

A.

copper sulphate solution

B.

lime water

C.

hydrochloric acid

D.

sodium hydroxide solution

Correct answer is B

No explanation has been provided for this answer.

174.

The diagram below is an illustration of a part of a flower. Study it and answer the question below.

The part labeled II is the 

A.

unfused stigma

B.

fused style

C.

fused ovaries

D.

unfused anther

Correct answer is C

No explanation has been provided for this answer.

175.

The diagram is an illustration of a part of a flower. Study it and answer the question below.

The function of the part labeled I is 

A.

receiving the pollen grain

B.

attract pollinators

C.

germination of the pollen grain

D.

site for double fertilization in the plant

Correct answer is B

Petals (collectively called the corolla) are also sterile floral parts that usually function as visually conspicuous elements serving to attract specific pollinators to the flower.