Waec Biology 2000 Past Questions and Answers

Question 46:

• WAEC 2000

Which of the following organisms is a producer?

A. Spirogyra
B. Mucor
C. Rhizopus
D. Yeast

Question 47:

• WAEC 2000

Which of the following groups consists of heterotrophs?

A. Mucor, chlamydomonas and Euglena
B. Spirogyra, Mucor and Mushroom
C. Man, Mucor and Mushroom
D. Man, Maize and Cowpea

Question 48:

• WAEC 2000

Which of the following organisms will not bring about decomposition?

A. Earthworm
B. Bactenum
C. Mould
D. Spirogyra

Question 49:

• WAEC 2000

Which of the following is not released during decay of living matter?

A. Ammonia
B. Oxygen
C. Carbon dioxide
D. Heat energy

Question 50:

• WAEC 2000

In commensalism

A. One of the organisms gains and the other loses
B. Both organisms benefit from the association
C. One of the organisms gains while the other neither gains nor loses
D. One of the organisms produces extra cellular Digestive juices.