Biology questions and answers

Biology Questions and Answers

How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.

3,316.

A test tube contains yeast in a glucose solution containing alkaline pyrogallol. The bubbles of carbon (IV) oxide produced indicates that the yeast cells are

A.

respiring in the absence of oxygen

B.

liberating oxygen on their own

C.

living and consuming oxygen

D.

being killed by the alcohol produced

Correct answer is A

No explanation has been provided for this answer.

3,317.

The mammalian lung is made air tight by the

A.

pleural cavity

B.

mucous membrane

C.

pleural membrane

D.

diaphragm

Correct answer is C

No explanation has been provided for this answer.

3,318.

The function of the fluid-filled pericadium is to

A.

reduce the friction caused by the pumping movements of the heart

B.

supply the heart with organisms from attacking the heart

C.

prevent disease causing organisms from attacking the heart

D.

reduce the intensity of the pumping

Correct answer is A

No explanation has been provided for this answer.

3,319.

The only vein that carriers pure oxygenated blood is the

A.

renal vein

B.

pulmonary vein

C.

hepatic vein

D.

sciatic vein

Correct answer is B

No explanation has been provided for this answer.

3,320.

In the root vascular system, the stele is directly surrounded by the

A.

pericycle

B.

cortex

C.

endodermis

D.

parenchyma

Correct answer is A

No explanation has been provided for this answer.