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 21: People who suck petrol with their mouths run the risk of increasing in their blood the concentration of Options:
  A) iron
  B) lead
  C) calcium
  D) magnesium
  Show Answer
  The correct answer is B .
• Question 22:

  Which of the following eye defects is caused by the inability of the eye to focus light on the retina?

  Options:
  A) Glaucoma
  B) Myopia
  C) Cataracts
  D) Astigmatism
  Show Answer
  The correct answer is B .
• Question 23: The legs and beak of an egret resemble those of the heron because they Options:
  A) both feed on fishes
  B) are both birds
  C) occupy similar niche
  D) occupy the same trophic level
  Show Answer
  The correct answer is A .
• Question 24:

  When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be

  Options:
  A) isotonic
  B) dilute
  C) hypotonic
  D) hypertonic
  Show Answer
  The correct answer is C .
• Question 25: The primary consumer in the food chain below is ................Green plants → Grasshopper → Lizard → Snake → Hawk Options:
  A) Grass hopper
  B) green plants
  C) hawk
  D) lizard
  Show Answer
  The correct answer is A .
• Question 26: The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the Options:
  A) amnion
  B) uterus
  C) placenta
  D) umbilical cord
  E) fallopian tube
  Show Answer
  The correct answer is C .
• Question 27:

  Albinism is an expression of trait controlled by

  Options:
  A) Chromosomes
  B) Recessive genes
  C) Dominant genes
  D) Mutation
  Show Answer
  The correct answer is B .
• Question 28:

  

  Use the diagram above to answer this question.

  The type of reproduction illustrated in IV is

  Options:
  A) sexual
  B) conjugation
  C) binary fission
  D) budding
  Show Answer
  The correct answer is D .
• Question 29: Adaptive radiation is illustrated in Options:
  A) modified insect mouthparts
  B) dentition in mammals
  C) wings in birds and bats
  D) appendages in insects
  Show Answer
  The correct answer is A .
• Question 30: The pineapple fruit is best described as Options:
  A) aggregate, succulent and indehiscent
  B) aggregate, succulent and dehiscent
  C) multiple, succulent and indehiscent
  D) multiple, succulent and dehiscent
  Show Answer
  The correct answer is C .