Waec Biology 2009 Past Questions and Answers

Question 31:

• WAEC 2009

Which of the following organisms is an endoparasite?

A. Mice
B. Mosquito
C. Ascaris
D. Dodder

Question 32:

• WAEC 2009

Which of the following statements about ecosystems is false?

A. All the energy entering the ecosystem is passed on to decomposers
B. The primary producers provide energy for herbivores and carnivores
C. Ecosystems must start with the capture of energy by autotrophs
D. Energy transfer from one trophic level to the other is not 100% efficient.

Question 33:

• WAEC 2009

What is the critical limiting factor for plants below the photic zone is an aquatic ecosystem?

A. Availability of nutrients
B. Availability of water
C. Intensity of light
D. Carbon dioxide concentration

Question 34:

• WAEC 2009

Which of the following instruments is used to estimate the number of plants in a habitat?

A. Pooter
B. Pitfall trap
C. Quadrat
D. Sweep net

Question 35:

• WAEC 2009

Which of the following statements is true about sandy soil? It

A. Has limited air space
B. Is light and easy to dig
C. Drains slowly
D. Is heavy and poorly aerated