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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 61· Co-ordination and control· WAEC

    The hormone that prepares the body for fight or flight is

    Explanation and discussion

  2. Question 62· Co-ordination and control· WAEC

    The light-sensitive layer of the eye is the

    Explanation and discussion

  3. Question 63· Co-ordination and control· WAEC

    The part of the eye that controls how much light enters is the

    Explanation and discussion

  4. Question 64· Co-ordination and control· WAEC

    The part of the brain that controls balance and posture is the

    Explanation and discussion

  5. Question 65· Co-ordination and control· WAEC

    The growth of a shoot towards light is

    Explanation and discussion

  6. Question 66· Co-ordination and control· WAEC

    The part of the eye that contains the light-sensitive cells is the

    Explanation and discussion

  7. Question 67· Co-ordination and control· WAEC

    The growth of a plant's roots towards water is called

    Explanation and discussion

  8. Question 68· Co-ordination and control· WAEC

    A reflex action such as withdrawing the hand from a hot object is controlled mainly by the

    Explanation and discussion

  9. Question 69· Co-ordination and control· WAEC

    Homeostasis means

    Explanation and discussion

  10. Question 70· Co-ordination and control· WAEC

    Insulin is produced by the

    Explanation and discussion

  11. Question 71· Co-ordination and control· WAEC

    The Eustachian tube connects the middle ear to the

    Explanation and discussion

  12. Question 72· Co-ordination and control· WAEC

    A diabetic person's blood glucose stays high because of too little

    Explanation and discussion

  13. Question 73· Co-ordination and control· WAEC

    A reflex action is

    Explanation and discussion

  14. Question 74· Co-ordination and control· WAEC

    The pituitary gland is called the master gland because it

    Explanation and discussion

  15. Question 75· Co-ordination and control· WAEC

    The quick withdrawal of the hand from a hot object is a

    Explanation and discussion

  16. Question 76· Co-ordination and control· WAEC

    Deficiency of iodine in the diet can lead to

    Explanation and discussion

  17. Question 77· Co-ordination and control· WAEC

    Which part of the human eye adjusts the size of the pupil?

    Explanation and discussion

  18. Question 78· Ecology· WAEC

    Desert plants such as cacti reduce water loss by having

    Explanation and discussion

  19. Question 79· Ecology· WAEC

    An animal that feeds on both plants and animals is

    Explanation and discussion

  20. Question 80· Ecology· WAEC

    Which of these is an abiotic factor?

    Explanation and discussion

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