WAEC Biology Past Questions & Answers - Page 17

81.

The diagram below is an illustration of some parts of a mammalian ear. Study it and answer this question.

The middle ear is connected to the pharynx by the part labelled

A.

I

B.

II

C.

III

D.

IV

Correct answer is A

No explanation has been provided for this answer.

82.

The table below shows the effect of hormones I, II, III, and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. Study it and answer this question.

The hormone responsible for anxiety is?

A.

I

B.

II

C.

III

D.

IV

Correct answer is A

No explanation has been provided for this answer.

83.

The table below shows the effect of hormones I, II, III, and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. Study it and answer this question. 

Which of the following hormones are l, II, Ill, and IV respectively?

A.

ADH, Glucagon, Oestrogen, Adrenaline

B.

Adrenaline, Glucagon, Oestrogen, ADH

C.

Glucagon,ADH, Oestrogen, Adrenaline

D.

Adrenaline, ADH, Oestrogen, Glucagon

Correct answer is B

No explanation has been provided for this answer.

84.

Use the following processes to answer this question.
I-Ribs move upward and outward

II- Diaphragm relaxes

IIl-Volume of thorax increases

IV-Air is forced out of the lungs

which of the following processes is a direct result of contraction of the intercostal muscles?

A.

I

B.

II

C.

III

D.

IV

Correct answer is B

No explanation has been provided for this answer.

85.

Use the following processes to answer this question.
I-Ribs move upward and outward

II- Diaphragm relaxes

IIl-Volume of thorax increases

IV-Air is forced out of the lungs

 Which of the processes take place during inspiration?

A.

I and III only

B.

II and III only

C.

II and III only

D.

III and IV only

Correct answer is A

No explanation has been provided for this answer.