Jamb Biology Past Questions For Year 1991
Question 51
Which of the following is likely to occur in a deciduous forest during the dry season?
- A. New leaves are formed
- B. The trees die off
- C. The undergrowth increases
- D. The ground becomes bare
Question 52
A food web is more stable than a food chain because
- A. it contains more organisms
- B. it has greater energy source
- C. it is not easy to destroy
- D. every organism has an alternative source
Question 53
Nitrogen- fixing micro-organisms in leguminous plants live symbiotically in the
- A. root nodules
- B. tap root
- C. branch roots
- D. root hairs
Question 54
Fertilizers are lost from the soil through
- A. sheet erosion and evaporation
- B. leaching, underground seepages and run-off
- C. sheet erosion, gully erosion and wind erosion
- D. wind erosion and heavy rainfall
