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 2051: The possession of scales, laying of eggs with shells and bony structure of the head are characteristics shared by Options:
  A) birds and reptiles
  B) fishes and birds
  C) reptiles and fishes
  D) birds and molluscs
  Show Answer
  The correct answer is A .
• Question 2052: The beak of a duck is structurally adapted for Options:
  A) scooping and sieving food
  B) catching and grasping food
  C) picking and cracking food
  D) boring and sucking food
  Show Answer
  The correct answer is A .
• Question 2053:

  Which of the following organs can be considered vestigial in humans but functional in other mammals

  Options:
  A) The liver
  B) Appendix
  C) Rectum
  D) Stomach
  Show Answer
  The correct answer is B .
• Question 2054:

  Which of the following is an example of an abiotic ecological factor?

  Options:
  A) Temperature
  B) Competition
  C) Predation
  D) Symbiosis
  Show Answer
  The correct answer is A .
• Question 2055: The correct increasing order of size for the cell components responsible for heredity is Options:
  A) chromosome → DNA → nucleus → gene
  B) DNA → gene → chromosome → nucleus
  C) chromosome → nucleus → DNA → gene
  D) DNA → gene → nucleus → chromosome
  Show Answer
  The correct answer is B .
• Question 2056: In the absence of oxygen, the pyruvic acid produced during glycolysis is converted to CO₂ and Options:
  A) water
  B) glycerol
  C) ethanol
  D) citric acid
  Show Answer
  The correct answer is C .
• Question 2057: In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces Options:
  A) alcohol
  B) oxygen
  C) carbon dioxide
  D) energy
  E) ethanol
  Show Answer
  The correct answer is C .
• Question 2058: During ovulation, an egg is released from the Options:
  A) corpus luteum
  B) ovarian funnel
  C) graafian follicle
  D) fallopian tube
  Show Answer
  The correct answer is C .
• Question 2059: The biological association that contributes directly to succession in a community is Options:
  A) competition
  B) predation
  C) parasitism
  D) commensalism
  Show Answer
  The correct answer is A .
• Question 2060: What is the function of the contractile vacuole in paramecium? Options:
  A) Produces enzymes
  B) Gets rid of excreta
  C) Stores and digest food
  D) Gets rid of excess water
  E) Controls movement
  Show Answer
  The correct answer is D .