Waec Biology 2004 Past Questions and Answers

Question 41:

• WAEC 2004

Which of the following defines symbiosis?

A. Parasites feed on dead organisms
B. Both organisms benefit mutually by living together
C. Saprophytes feed on living organisms
D. Organisms serve as host to parasite

Question 42:

• WAEC 2004

Plants found in the aquatic habitat are generally referred to as

A. Epiphytes
B. Halophytes
C. Xerophytes
D. Hydrophytes

Question 43:

• WAEC 2004

When a farmer sprays crops with a pesticide, the pesticide becomes

A. Poisonous to all plants
B. Is broken down by soil algae
C. Easily washed down into lakes and rivers
D. Absorbed by bodies of mammals

Question 44:

• WAEC 2004

Which of the following methods is best for the determination of population density of Tridax in an open held?

A. Transect
B. Quadrat
C. Sweep-net
D. Pit-fall

Question 45:

• WAEC 2004

If a piece of abandoned farmland went through a series of floral and faunal changes and became established with
permanent plant and animal population, it could be said to have undergone

A. Transformation
B. Succession
C. Competition
D. Evolution