JAMB Biology Past Questions & Answers - Page 125

621.

In eukaryotic cells, cellular respiration takes place in the

A.

nucleus

B.

cytoplasm

C.

centrioles

D.

mitochondrion

Correct answer is D

No explanation has been provided for this answer.

622.

Gaseous exchange in the lungs takes place in the

A.

alveoli

B.

bronchi

C.

bronchioles

D.

trachea

Correct answer is A

No explanation has been provided for this answer.

623.

The by-product of photosynthesis is

A.

CO2

B.

O2

C.

C6H12O6

D.

H2O

Correct answer is B

No explanation has been provided for this answer.

624.

One of the following diseases is caused by fungi

A.

cassava mosaic

B.

coffee leaf rust

C.

leaf blight of cassava rossette

D.

Tomato mosaic

Correct answer is B

No explanation has been provided for this answer.

625.

The lowest unit of classification is the

A.

class

B.

genus

C.

phylum

D.

species

Correct answer is D

Option D is correct. This is because, species is the lowest unit in the hierarchy of classifying living organisms. See the illustration below:

From kingdom → phylum → class → order → family → genus → species