JAMB Biology Past Questions & Answers - Page 126

626.

Which of the following is not a monocotyledonous seed?

A.

cowpea

B.

maize

C.

millet

D.

wheat

Correct answer is A

No explanation has been provided for this answer.

627.

Which of the following diseases is not sexually transmitted?

A.

Gonorrhea

B.

Herpes

C.

Influenza

D.

Syphilis

Correct answer is C

No explanation has been provided for this answer.

628.

The earliest form of life in the animal kingdom is the

A.

aves

B.

amphibian

C.

pisces

D.

reptilia

Correct answer is C

No explanation has been provided for this answer.

629.

The light sensitive cells in the human eye is called the ...............

A.

Choroid

B.

Sclerotic layer

C.

retina

D.

cones

Correct answer is D

Cone cells or cones, are one of two types of photo-receptor cells in the retina of the eye. They are responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light. Cone cells are densely packed in the fovea centralis, a 0.3 mm diameter rod-free area with very thin, densely packed cones which quickly reduce in number towards the periphery of the retina. There are about six to seven million cones in a human eye and are most concentrated towards the macula.

630.

A group of similar organisms inhabiting the same environment is called

A.

ecosystem

B.

habitat

C.

population

D.

species

Correct answer is C

No explanation has been provided for this answer.