Jamb Biology 1998 Past Questions and Answers

Question 16:

• JAMB 1998

Unicellular organisms transport essential nutrients directly to all parts of their bodies by the process of diffusion because, they have

A. A large volume of surface area ratio
B. A large surface area to volume ratio
C. Their bodies immersed in the nutrients
D. Their outer membrane made of cellulose

Question 17:

• JAMB 1998

The heart of the adult frog consist of

A. Two auricles and two ventricles
B. One auricle and one ventricle
C. Two ventricle and one auricle
D. One ventricle and two auricles

Question 18:

• JAMB 1998

In adult mammalian blood, the cells which lack nuclei are the

A. Erythrocytes
B. Lymphocytes
C. Leucocytes
D. Phagocytes

Question 19:

• JAMB 1998

Which of following movements occur during exhalation?

A. The diaphragm and intercostal muscles relax
B. The thoracic cavity increases in volume
C. The diaphragm and intercostal muscles contract
D. The diaphragm contracts and the intercostal muscle relax

Question 20:

• JAMB 1998

In which of the following groups of animals is the malpighian tubule found?

A. Lizards, snakes and frogs
B. Crickets, houseflies and grasshoppers
C. Millipedes, centipedes and scorpions
D. Earthworms, roundworms and flatworms