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WAEC Biology questions

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

AllJAMBWAEC
All topicsCell structure and organisation · 26Cellular activities · 24Co-ordination and control · 27Ecology · 33Evolution · 18Excretion · 22Growth · 18Heredity and variation · 24Nutrition · 30Reproduction · 29Respiration · 25Support and movement · 22Transport · 27Variety of organisms · 28

  1. Question 81· Ecology· WAEC

    Nitrogen-fixing bacteria in root nodules of legumes have a relationship with the plant called

    Explanation and discussion

  2. Question 82· Ecology· WAEC

    Organisms that make their own food are called

    Explanation and discussion

  3. Question 83· Ecology· WAEC

    Decomposers in an ecosystem are mainly

    Explanation and discussion

  4. Question 84· Ecology· WAEC

    Which biome has tall trees with buttress roots, heavy rain all year and several canopy layers?

    Explanation and discussion

  5. Question 85· Ecology· WAEC

    In the food chain maize → rat → snake → eagle, the snake is a

    Explanation and discussion

  6. Question 86· Ecology· WAEC

    A pyramid of energy can never be inverted because

    Explanation and discussion

  7. Question 87· Ecology· WAEC

    Organisms that break down dead matter and return nutrients to the soil are

    Explanation and discussion

  8. Question 88· Ecology· WAEC

    All the living and non-living things interacting in an area form

    Explanation and discussion

  9. Question 89· Ecology· WAEC

    An association between two organisms in which both benefit is

    Explanation and discussion

  10. Question 90· Ecology· WAEC

    The relationship between nitrogen-fixing bacteria in root nodules and a leguminous plant is

    Explanation and discussion

  11. Question 91· Ecology· WAEC

    Nitrifying bacteria convert

    Explanation and discussion

  12. Question 92· Ecology· WAEC

    Which of the following is an abiotic factor in a habitat?

    Explanation and discussion

  13. Question 93· Ecology· WAEC

    Which of these is a biotic factor?

    Explanation and discussion

  14. Question 94· Ecology· WAEC

    The total number of organisms of one species living in a habitat is its

    Explanation and discussion

  15. Question 95· Ecology· WAEC

    The instrument used to measure relative humidity is the

    Explanation and discussion

  16. Question 96· Ecology· WAEC

    A quadrat is used to estimate

    Explanation and discussion

  17. Question 97· Ecology· WAEC

    A food chain always begins with a

    Explanation and discussion

  18. Question 98· Ecology· WAEC

    Bacteria that convert nitrates in the soil to nitrogen gas carry out

    Explanation and discussion

  19. Question 99· Ecology· WAEC

    The instrument used to measure rainfall is the

    Explanation and discussion

  20. Question 100· Ecology· WAEC

    Mangrove plants are adapted to waterlogged soils by having

    Explanation and discussion

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