JAMB Biology Past Questions & Answers - Page 404

2,016.

For pollination and fruit formation, the essential part(s) of the flower should be the

A.

corolla

B.

ovary

C.

pistil (gynoecium)

D.

ovules

E.

receptacle

Correct answer is C

No explanation has been provided for this answer.

2,017.

The conversion of excess amino acids into urea occurs in the

A.

Kidney

B.

pancreas

C.

villi

D.

liver

E.

spleen

Correct answer is D

No explanation has been provided for this answer.

2,018.

Which of the following food substances is digested in the stomach?

A.

Carbohydrate

B.

Fats and oil

C.

Fats and proteins

D.

Proteins

E.

Carbohydrates and fats

Correct answer is D

No explanation has been provided for this answer.

2,019.

The joint between the atlas and axis vertebrae allows for

A.

rotatory movement only

B.

up and down or nodding movements only

C.

rotatory and nodding movements

D.

no movement at all

E.

slight movement

Correct answer is A

-The joint between the atlas and axis vertebrae is a PIVOT JOINT.

-The Odontoid Process of the axis acts as a pivot which allow the rotation of the head on the vertebral column.

-Hence; the atlas and the skull together ROTATE about the Odontoid Process.

2,020.

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.