Question 216:

• JAMB 1981

The rate of transpiration of a leafy shoot would be highest under

A. Damp, cold, still air
B. Damp, warm, moving air
C. Dry, warm, moving air
D. Dry, cold, moving air
E. Dry, warm, still air

Question 217:

• JAMB 1981

What is name of the respiratory organ of the crab?

A. Tubules
B. Trachaea
C. Spiracles
D. Lungs
E. Gills

Question 218:

• JAMB 1981

The two types of human tapeworm can be distinguished by the presence or absence of

A. Scolex
B. Hook
C. Head
D. Sucker
E. Proglottis

Question 219:

• JAMB 1981

All the following are digestive enzymes except

A. Bile
B. Lipase
C. Maltase
D. Pepsin
E. Ptyalin

Question 220:

• JAMB 1981

In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces

A. Alcohol
B. Oxygen
C. Carbon dioxide
D. Energy
E. Ethanol