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JAMB and WAEC Biology questions: Ecology

71 questions with answers and explanations. Tap an option to check yourself.

AllJAMBWAEC
All topicsCell structure and organisation · 56Cellular activities · 56Co-ordination and control · 58Ecology · 71Evolution · 45Excretion · 52Growth · 45Heredity and variation · 60Nutrition · 64Reproduction · 62Respiration · 55Support and movement · 50Transport · 57Variety of organisms · 60

  1. Question 61· Ecology· WAEC

    The nitrogen-fixing bacteria found in the root nodules of legumes are

    Explanation and discussion

  2. Question 62· Ecology· WAEC

    The role of decomposers in an ecosystem is to

    Explanation and discussion

  3. Question 63· Ecology· JAMB

    In the food chain phytoplankton → small fish → large fish → man, which organism is at the third trophic level?

    Explanation and discussion

  4. Question 64· Ecology· WAEC

    An instrument used to measure relative humidity in an ecological study is the

    Explanation and discussion

  5. Question 65· Ecology· WAEC

    Cattle egrets feed on insects disturbed by grazing cattle, which are not affected. This relationship is

    Explanation and discussion

  6. Question 66· Ecology· JAMB

    The first organisms to colonise bare rock during ecological succession are usually

    Explanation and discussion

  7. Question 67· Ecology· JAMB

    Only about 10% of the energy at one trophic level passes to the next because most of it is

    Explanation and discussion

  8. Question 68· Ecology· WAEC

    In the food chain grass → goat → man, man occupies the position of

    Explanation and discussion

  9. Question 69· Ecology· WAEC

    Energy is lost at each step of a food chain mainly as

    Explanation and discussion

  10. Question 70· Ecology· JAMB

    Several food chains linked together in an ecosystem make up a

    Explanation and discussion

  11. Question 71· Ecology· WAEC

    The relationship between a remora fish and a shark, where one benefits and the other is unaffected, is

    Explanation and discussion

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