Waec Biology Past Questions and Answers

Question 1641:

• WAEC 2016

The best time to pluck the leaf for the experiment is

A. After being exposed to sunlight
B. Three hours after sunset
C. Before sunrise
D. Six hours after sunset

Question 1642:

• WAEC 2016

In which of the plant tissues are guard cells located?

A. Epidemis
B. MesophyII
C. Vascular bundles
D. Meristems

Question 1643:

• WAEC 2016

The association between two organisms in which one of the organisms gains and the other loses is referred to as

A. Saprophytism
B. Commensalism
C. Mutualism
D. Parasitism

Question 1644:

• WAEC 2016

The function of the villi in the alimentary canal is to

A. Secrete gastric juice
B. Curdle milk
C. Emulsify fat
D. Increase the surface area for absorption

Question 1645:

• WAEC 2016

The function of the villi in the alimentary canal is to

A. Secrete gastric juice
B. Curdle milk
C. Emulsify fat
D. Increase the surface area for absorption