Biology Exam Past Questions and Answers | JAMB, WAEC and NECO

Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.

• Question 301: Sex - linked genes are located on Options:
  A) Y - chromosomes
  B) X - and Y - chromosomes
  C) homologous chromosome
  D) X - chromosome
  Show Answer
  The correct answer is B .
• Question 302: The main function of the petal of a flower is to Options:
  A) attract pollination agents
  B) protect the flower while still in bud
  C) serve as landing stage for insects
  D) protect the inner paisr from desiccation
  Show Answer
  The correct answer is A .
• Question 303: The activity of an organism which affects the survival of another organism in the same habitat constitutes Options:
  A) an edaphic factor
  B) an abiotic factor
  C) a biotic factor
  D) a physiographic factor
  Show Answer
  The correct answer is C .
• Question 304:
  

  The function of the absorption is performed by the structure labelled

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is B .
• Question 305: In mammalian development, the function of the yolk is to Options:
  A) supply nutrients to the embryo
  B) act as the shock-absorber to the foetus
  C) supply air to the embryo
  D) facilitates the process of excretion in the foetus
  Show Answer
  The correct answer is A .
• Question 306: The most important hormone that induces the ripening of fruit is Options:
  A) Ethylene
  B) Indole acetic acid
  C) Gibberallin
  D) Cytokinin
  Show Answer
  The correct answer is A .
• Question 307: Where is the food stored in yam plant? Options:
  A) stem
  B) Bud
  C) Adventitous root
  D) Leaves
  E) Tap root
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  The correct answer is A .
• Question 308: In lizards, the lowering of the gular fold is used to Options:
  A) catch insects
  B) attract mates
  C) defend their territory
  D) frighten enemies
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  The correct answer is B .
• Question 309: Spirogyra, Euglena and Chlamydomonas share many characteristics EXCEPT Options:
  A) nutrition
  B) reproduction
  C) mobility
  D) irritability
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  The correct answer is C .
• Question 310:

  Which of the following is an example of continous variation?

  Options:
  A) Human blood groups
  B) Sex difference in human
  C) Haemoglobin types
  D) Height in humans
  Show Answer
  The correct answer is D .