WAEC Biology Past Questions & Answers - Page 136

676.

Which of the following processes removes water from the water cycle? 

A.

Condensation

B.

Perspiration

C.

Photosynthesis

D.

Transpiration

Correct answer is D

No explanation has been provided for this answer.

677.

Using iodine solution, Biuret test, Benedict reagents and ethanol, respectively in testing for reducing
sugars, which of the following trends of colour changes would be observed?

A.

Blue → black → blue → brown → clear

B.

 Brown → blue → brick red → clear

C.

Brown → violet → blue → clear

D.

Brown → blue → violet → milky

Correct answer is B

No explanation has been provided for this answer.

678.

Which of the following substances is contained in chloroplasts?

A.

Starch

B.

Sugar

C.

Glycogen

D.

Dextrin

Correct answer is D

No explanation has been provided for this answer.

679.

After fertilization in the flowering plants, the zygote develops into the

A.

plumule

B.

radicle

C.

cotyledon

D.

embryo

Correct answer is D

No explanation has been provided for this answer.

680.

In flowering plants, fertilization would occur when

A.

the pollen grows downwards penetrating the style

B.

a pollen grain is transferred to the stigma

C.

one of the nuclei inside the pollen tube fuses with the ovum

D.

the nucleus of the pollen tube divides

Correct answer is C

No explanation has been provided for this answer.