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.

4,231.

A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that

A.

the salt solution is more concentrated that the cell sap of the kolanut

B.

the cell sap of the kolanut is more concentrated than the salt solution

C.

the salt solution has the same concentration as the cell sap of the kolanut

D.

kolanut cell can multiply in water

E.

the kolanut lost some water molecules to the salt solution

Correct answer is B

No explanation has been provided for this answer.

4,232.

Water is required for seed germination to take place because it

A.

activates the enzymes

B.

softens the testa

C.

liberates energy for growth

D.

permits radicle growth

E.

allow oxygen to diffuse into the seed

Correct answer is A

No explanation has been provided for this answer.

4,233.

A true fruit is formed from

A.

 a fertilized ovary and other floral parts

B.

a fertilized ovary

C.

a fertilized ovary and calyx

D.

a fertilized ovary and fleshy receptacle

E.

 an unfertilized ovary and other floral part

Correct answer is B

No explanation has been provided for this answer.

4,234.

Which of the following organs produces bile?

A.

Gall bladder

B.

Pancreas

C.

Spleen

D.

Liver

E.

Stomach

Correct answer is D

No explanation has been provided for this answer.

4,235.

Milk can be pasteurized by

A.

the addition of common salt

B.

boiling for one hour

C.

heating to 75oc for 20 minutes

D.

the addition of vinegar

E.

heating to 100oc for 12 hours

Correct answer is C

No explanation has been provided for this answer.