Waec Biology 2005 Past Questions and Answers

Question 41:

• WAEC 2005

Which of the following instruments is used to measure the speed of a stream?

A. Simple float
B. Secchi disc
C. Quadrat frame
D. Rain gauge

Question 42:

• WAEC 2005

In an ecosystem the organism which changes light energy into stored chemical energy is the

A. Consumer
B. Decomposer
C. Producer
D. Carnivore

Question 43:

• WAEC 2005

Which of the following processes does not contribute to the maintenance of the nitrogen content of the soil?

A. Decomposition
B. Denitrification
C. Nitrification
D. Nitrogen fixation

Question 44:

• WAEC 2005

Which of the following organisms is well adapted for fluid feeding?

A. Cockroach
B. Mosquito
C. Grasshopper
D. Ants

Question 45:

• WAEC 2005

The density-dependent factors that operate to regulate a population size may include the following except

A. Shortage of food supply
B. Fire outbreak
C. Spread of diseases
D. Increased competition