Year : 
2004
Title : 
Biology
Exam : 
JAMB Exam

Paper 1 | Objectives

41 - 50 of 50 Questions

# Question Ans
41.

Sex - linked genes are located on

A. Y - chromosomes

B. X - and Y - chromosomes

C. homologous chromosome

D. X - chromosome

Detailed Solution

Characters determined by a gene located on only the X-chromosome are said to be SEX-LINKED.
42.

Which of the following is an example of intraspecific competition?

A. a lizard and an ant-eater chasing an insect

B. a worker termite and a soldier in a limited

C. a hawk and an eagle targeting the same chicken

D. yam and potato shots growing out through the same window

Detailed Solution

An intraspecific competition exists between members of the same species. This fight is for a similar resource needed for their growth. The yam and potatoes are both root and tuber crops and hence, battle for resources in the soil for their survival.
43.

Plants survive hot dry conditions by

A. storing water in large parenchyma cells

B. producing numerous leaves

C. having numerous stomata

D. having evergreen leaves

A

44.

Rodents gnaw on food with their

A. molar teeth

B. strong jaws

C. flat-ridged teeth

D. chisel - like front teeth

D

45.

The spots and stripes of the leopard and tiger are example of

A. cryptic colouration

B. warning colouration

C. disruptive colouration

D. counter shading

C

46.

An evidence of the relationship between living organisms and their extinct relatives can best be obtained from

A. embryology

B. comparative anatomy

C. comparative physiology

D. palaeontology

D

47.

The process of pollination involves the transfer of pollens from

A. II to III

B. IV to I

C. I to II

D. III to IV

A

48.

The part labelled II is the

A. stigma

B. anther

C. filament

D. style

B

49.

The bones labelled II are called

A. lumbar vertebrae

B. thoracic vertebrae

C. cervical vertebrae

D. sacral vertebrae

A

50.

The type of joint between adjacent bones in the part labelled II is the

A. hinge joint

B. ball and socket joint

C. suture joint

D. sliding joint

D

41.

Sex - linked genes are located on

A. Y - chromosomes

B. X - and Y - chromosomes

C. homologous chromosome

D. X - chromosome

Detailed Solution

Characters determined by a gene located on only the X-chromosome are said to be SEX-LINKED.
42.

Which of the following is an example of intraspecific competition?

A. a lizard and an ant-eater chasing an insect

B. a worker termite and a soldier in a limited

C. a hawk and an eagle targeting the same chicken

D. yam and potato shots growing out through the same window

Detailed Solution

An intraspecific competition exists between members of the same species. This fight is for a similar resource needed for their growth. The yam and potatoes are both root and tuber crops and hence, battle for resources in the soil for their survival.
43.

Plants survive hot dry conditions by

A. storing water in large parenchyma cells

B. producing numerous leaves

C. having numerous stomata

D. having evergreen leaves

A

44.

Rodents gnaw on food with their

A. molar teeth

B. strong jaws

C. flat-ridged teeth

D. chisel - like front teeth

D

45.

The spots and stripes of the leopard and tiger are example of

A. cryptic colouration

B. warning colouration

C. disruptive colouration

D. counter shading

C

46.

An evidence of the relationship between living organisms and their extinct relatives can best be obtained from

A. embryology

B. comparative anatomy

C. comparative physiology

D. palaeontology

D

47.

The process of pollination involves the transfer of pollens from

A. II to III

B. IV to I

C. I to II

D. III to IV

A

48.

The part labelled II is the

A. stigma

B. anther

C. filament

D. style

B

49.

The bones labelled II are called

A. lumbar vertebrae

B. thoracic vertebrae

C. cervical vertebrae

D. sacral vertebrae

A

50.

The type of joint between adjacent bones in the part labelled II is the

A. hinge joint

B. ball and socket joint

C. suture joint

D. sliding joint

D