JAMB Biology Past Questions & Answers - Page 413

2,061.

The carrier of the hereditary character in plants and animal is the

A.

Cell

B.

Nucleus

C.

Chromosome

D.

Chloroplast

E.

Gene

Correct answer is C

- The Hereditary characters of an organism are determined by genes.

- However, Chromosomes are dark staining structures in a cell's nucleus  on which the organism's genes (DNA molecules) are arranged.

- I.e Chromosomes are the carriers of genes.

- And these genes are located on the Loci of the Chromosome. 

2,062.

A secchi disc is used in the determination of

A.

Rainfall

B.

Tides

C.

Waves

D.

Turbidity

E.

Current velocity

Correct answer is D

No explanation has been provided for this answer.

2,063.

The complex relationship between the members of a community and between the community as a whole and its physical environment is

A.

Ecosystem

B.

Habitat

C.

Environment

D.

Niche

E.

Micro habitat

Correct answer is A

No explanation has been provided for this answer.

2,064.

Which of the structure listed below is peculiar to the axis vertebra?

A.

Odontoid process

B.

Anterior zygapophysis

C.

Posterior zygapophysis

D.

Lateral spine

E.

Centrum

Correct answer is A

No explanation has been provided for this answer.

2,065.

The movement of molecules from a region of higher concentration to one of lower concentration is

A.

Diffusion

B.

Transpiration

C.

Osmosis

D.

Translocation

E.

Plasmolysis

Correct answer is A

No explanation has been provided for this answer.