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:

  Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents?

  Options:
  A) both parents possess genes for shortness
  B) the father possesses a gene for shortness
  C) nature makes the child short
  D) the mother possesses a gene for shortness
  Show Answer
  The correct answer is A .
• Question 22: The seedlings in rice field were found to have thin lanky growth with reddish leaves and poor root development. This is because the soil lacks Options:
  A) sulphur
  B) phosphorus
  C) potassium
  D) iron
  Show Answer
  The correct answer is B .
• Question 23:

  The probability of a baby being a boy or a girl depends on the contribution of the

  Options:
  A) father's sex cells
  B) father's stomatic chromosome
  C) mother's sex cell
  D) mother's X-chromosome
  Show Answer
  The correct answer is A .
• Question 24: A limited factor in a plant population near a chemical factory is likely to be Options:
  A) Light
  B) Humidity
  C) wind
  D) pH
  Show Answer
  The correct answer is D .
• Question 25: Fibrinogen and prothrombin play important roles in the Options:
  A) deamination of proteins
  B) clotting of blood
  C) detoxication of substances
  D) storage of vitamins
  Show Answer
  The correct answer is B .
• Question 26: Which of the following statements is NOT true of insectivorous plants? Options:
  A) They obtain part of their food by trapping and feeding on insects
  B) They attract insects simply because of pollination
  C) Thay can grow in soils poor in nitrogenous salts
  D) They can supplement their nitrgen supply by feeding on insects
  E) Example include butterworts, sundews and pitcher plants
  Show Answer
  The correct answer is B .
• Question 27:

  Which of the following is the most inclusive level of classification in the Linnaean system?

  Options:
  A) Kingdom
  B) Domain
  C) Class
  D) Phylum
  Show Answer
  The correct answer is A .
• Question 28:

  What is the tissue responsible for transporting water and minerals from the roots to the rest of the plant?

  Options:
  A) Xylem
  B) Epidermis
  C) Parenchyma
  D) Phloem
  Show Answer
  The correct answer is A .
• Question 29:

  Which of the following is associated with the dark stage of photosynthesis?

  Options:
  A) Assimilation of Carbon(IV)oxide
  B) Photophosphorylation
  C) Photolysis
  D) Excitation of chlorophyll
  Show Answer
  The correct answer is A .
• Question 30: The greatest amount of energy will be obtained by the oxidation of 100kg of Options:
  A) meat
  B) butter
  C) sugar
  D) biscuits
  Show Answer
  The correct answer is B .