JAMB Biology Past Questions & Answers - Page 406

2,026.

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.

2,027.

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.

2,028.

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.

2,029.

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.

2,030.

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.