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 1: The pollutants that contribute to the depletion of the ozone layer in the atmosphere are Options:
  A) radioactive materials
  B) oxides of sulphur
  C) oxides of carbon
  D) chlorofluorocarbons
  Show Answer
  The correct answer is D .
• Question 2: Scales on reptiles are a feature for Options:
  A) conserving water
  B) conserving food
  C) protecting the skin
  D) locomotion
  Show Answer
  The correct answer is A .
• Question 3:

  Which of the following describes an example of fertilization in higher organisms?

  Options:
  A) Fusion of sperm and egg nuclei
  B) Pollen grain landing on a sticky stigma
  C) Ejaculation of the egg and pollen grain
  D) Ejaculation of sperm into the female body
  Show Answer
  The correct answer is A .
• Question 4: The cell component that is present in a prokaryotic cell is the Options:
  A) Chloroplast
  B) Ribosome
  C) Mitochondrion
  D) Nuclear envelope
  Show Answer
  The correct answer is B .
• Question 5: The following are ductless glands except Options:
  A) adrenal
  B) pancreatic
  C) parathyroid
  D) salivary
  Show Answer
  The correct answer is D .
• Question 6: Some of the diseases caused by bacteria are Options:
  A) tuberculosis, gonorrhoea and syphilis
  B) tuberculosis, gonorrhoea and AIDS
  C) Poliomyelitis, syphilis and gonorrhoea
  D) AIDS, cholera and tuberculosis
  Show Answer
  The correct answer is A .
• Question 7: Which of the following can bring about the greatest increase in the rate of transpiration? Options:
  A) Increased humidity
  B) Reduced temperature
  C) Reduced wind speed
  D) Reduced humidity
  Show Answer
  The correct answer is D .
• Question 8: The very bright colours in some types of mushroom Options:
  A) are warning that they may be poisonous
  B) indicate they are very taste
  C) attract potential transporters of the spores
  D) perform the same function as bright colours in flowers
  Show Answer
  The correct answer is A .
• Question 9: which of these worms is beneficial to man? Options:
  A) Hookworm
  B) Tapeworm
  C) Roundworm
  D) Earthworm
  E) Guinea worm
  Show Answer
  The correct answer is D .
• Question 10:

  Ecological succession refers to

  Options:
  A) The movement of organisms from one habitat to another
  B) The competition among species for limited resources
  C) The process of natural selection in a population
  D) The gradual and predictable change in a community over time
  Show Answer
  The correct answer is D .