Year : 
2021
Title : 
Biology
Exam : 
WASSCE/WAEC MAY/JUNE

Paper 1 | Objectives

11 - 20 of 50 Questions

# Question Ans
11.

Radius and ulna are bones of the?

A. pectoral girdle

B. upper arm

C. pelvic girdle

D. lower arm

Detailed Solution

Our forearm contains two long, parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.
12.

The blood vessel which carries blood from the alimentary canal to the liver is the

A. hepatic artery

B. hepatic vein

C. hepatic portal vein

D. mesenteric artery

Detailed Solution

The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
13.

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.Which of the labeled parts is the cortex?

A. I

B. II

C. III

D. IV

D

14.

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.What is the main function of the organ?

A. Excretion

B. Respiration

C. Reproduction

D. Locomotion

A

15.

Detoxification of urea takes place in the?

A. pancreas

B. heart

C. liver

D. testes

C

16.

Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?

A. insulin

B. adrenaline

C. thyroxine

D. parathormore

B

17.

The temperature control centre in mammals is located in the?

A. skin

B. hypothalamus

C. pituitary gland

D. adrenal gland

B

18.

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.The eye defect illustrated in the diagram is?

A. hypermetropia

B. astigmatism

C. presbyopia

D. myopia

Detailed Solution

Myopia occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.
19.

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.The eye defect can be corrected by the use of?

A. convex lens

B. concave lens

C. bifocal lens

D. cylindrical lens

Detailed Solution

Nearsightedness (myopia) is corrected with lenses called “minus power lenses.”
They are concave-shaped and help the eyes focus light properly. Myopia causes a person to see distant objects as blurry.
20.

How many gametes are produced in the pollen grain of a flowering plant before fertilization?

A. one

B. two

C. three

D. four

B

11.

Radius and ulna are bones of the?

A. pectoral girdle

B. upper arm

C. pelvic girdle

D. lower arm

Detailed Solution

Our forearm contains two long, parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.
12.

The blood vessel which carries blood from the alimentary canal to the liver is the

A. hepatic artery

B. hepatic vein

C. hepatic portal vein

D. mesenteric artery

Detailed Solution

The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
13.

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.Which of the labeled parts is the cortex?

A. I

B. II

C. III

D. IV

D

14.

The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.What is the main function of the organ?

A. Excretion

B. Respiration

C. Reproduction

D. Locomotion

A

15.

Detoxification of urea takes place in the?

A. pancreas

B. heart

C. liver

D. testes

C

16.

Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?

A. insulin

B. adrenaline

C. thyroxine

D. parathormore

B

17.

The temperature control centre in mammals is located in the?

A. skin

B. hypothalamus

C. pituitary gland

D. adrenal gland

B

18.

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.The eye defect illustrated in the diagram is?

A. hypermetropia

B. astigmatism

C. presbyopia

D. myopia

Detailed Solution

Myopia occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.
19.

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.The eye defect can be corrected by the use of?

A. convex lens

B. concave lens

C. bifocal lens

D. cylindrical lens

Detailed Solution

Nearsightedness (myopia) is corrected with lenses called “minus power lenses.”
They are concave-shaped and help the eyes focus light properly. Myopia causes a person to see distant objects as blurry.
20.

How many gametes are produced in the pollen grain of a flowering plant before fertilization?

A. one

B. two

C. three

D. four

B