Waec Biology Past Questions and Answers

Question 256:

• WAEC 1993

Exchange of gases takes place in the air sacs contained in the

A. I
B. II
C. IV
D. V
E. VI

Question 257:

• WAEC 1993

During the process of breathing, volume and pressure changes occur as a result of the movement of the parts labelled

A. I and II
B. II and IV
C. III and VII
D. IV and V
E. VI and VII

Question 258:

• WAEC 1993

Which of the following diseases is caused by deficiency of insulin in the body?

A. Malaria
B. Diabetes mellitus
C. Hepatitis
D. Gonorrhoea
E. Cholera

Question 259:

• WAEC 1993

Which of the following is the medium of transportation of nutrients within unicellular organisms?

A. Blood
B. Serum
C. Protoplasm
D. Plasma
E. Lymph

Question 260:

• WAEC 1993

Which of the following blood vessels carries oxygenated blood into the heart?

A. Pulmonary vein
B. Anterior vena cava
C. Pulmonary artery
D. Aorta
E. Posterior vena cava