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.

4,191.

A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following

A.

Ecosystem

B.

Food chain

C.

Food web

D.

Succession

E.

Community

Correct answer is D

No explanation has been provided for this answer.

4,193.

The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that

A.

solution X was stronger than Y

B.

solution Y was stronger than X

C.

Spirogyra used up the sugar in solution X

D.

solution X is good for stimulating sexual reproduction in Spirogyra

E.

solution Y was less contaminated than X

Correct answer is B

 - osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.

4,194.

A potometer is used to determine the rate at which a shoot 

A.

respires

B.

sucks air bubbles

C.

loses weight

D.

absorbs water

E.

transpires

Correct answer is E

No explanation has been provided for this answer.

4,195.

Which one of the following parts of the mammalian body is most closely associated with the production of urine? 

A.

Malpighian capsule

B.

Urinary bladder

C.

Ureter

D.

Vas deferens

E.

Urethra

Correct answer is A

The Malpighian corpuscle performs the crucial step involved in urine formation.