Biology 1991 Waec Past Questions and Answers

Question 11 :

• WAEC 1991

The pulmonary vein carries

A. Oxygenated blood from right ventricles to the lungs
B. Oxygenated blood from lungs to the left auricle
C. Deoxygenated blood from the lungs
D. Oxygenated blood from lungs to the right auricle
E. Deoxygenated blood from the right ventricle to the lungs

Question 12 :

• WAEC 1991

The upper part of the trachea in mammals is called

A. Palate
B. Epiglottis
C. Larynx
D. Glottis
E. Bronchus

Question 13 :

• WAEC 1991

Which of the following parts of the mammalian skin is directly is directly involved in excretion?

A. Sebaceous gland
B. Sweet gland
C. Hormy layer
D. Hair follicle
E. Malphigian layer

Question 14 :

• WAEC 1991

Kidney stone is a disease of the Kidney that result in the

A. Blockage of the tubules by solid particles
B. Passing out useful materials of the body fluid within the urine
C. Presence of large quantity of water in urine
D. Passing out hormones in the urine
E. Prevention of urine production

Question 15 :

• WAEC 1991

The following are the activities of the liver except

A. Production of heat
B. Manufacture of bile
C. Detoxication of alcohol and drugs
D. Maintenance of osmotic balance
E. Deamination of excess nitrogenous substance