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 911:

  One of the following is an effect of clay soil on vegetation

  Options:
  A) Supports luxuriant vegetation such as forest
  B) Supports scanty vegetation
  C) Does not support light vegetation
  D) Support arid vegetation
  Show Answer
  The correct answer is A .
• Question 912:

  A pollutant that is mostly associated with acid rain is

  Options:
  A) Nitrogen (IV) oxide
  B) Ozone
  C) Flourine
  D) Carbony (IV) oxide
  Show Answer
  The correct answer is A .
• Question 913: The bright coloured eye spots on the wings of moth are an example of Options:
  A) warning colouration
  B) disruptive colouration
  C) crypsis
  D) mimicry
  Show Answer
  The correct answer is D .
• Question 914: A married couple has 10 children and they are all girls. Which of the following is the CORRECT explanation? Options:
  A) The woman is incapable of producing male children
  B) The man’s sperms are very weak
  C) The man is not athletic enough
  D) The Y component of the men’s sex chromosomes was always involved
  E) The X component of the man’s sex chromosomes was always involved
  Show Answer
  The correct answer is E .
• Question 915: The Southern Guinea Savanna differs from the Northern Guinea Savanna in that it has Options:
  A) lower rainfall and shorter grasses
  B) less grasses and scattered trees
  C) more rainfall and taller grasses
  D) less arboreal and burrowing animals
  Show Answer
  The correct answer is C .
• Question 916:

  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 917: Parasitic form are NOT found among Options:
  A) platyhelminthes
  B) nematodes
  C) mollusces
  D) annelids
  Show Answer
  The correct answer is C .
• Question 918: An evidence of a common ancestral for fishes, amphibians, reptiles, birds and mammals is the Options:
  A) possession of wings by birds and bats
  B) cold-bloodedness of fishes, amphibians and reptile
  C) presence of gilll clefts in vertebrate embryos
  D) possession of scale by fish and reptiles
  Show Answer
  The correct answer is C .
• Question 919: Genetic counselling is important when a marriage is planned between a Options:
  A) Rh^- woman and Rh ^man+
  B) Rh^- woman and Rh^- man
  C) Rh⁺ woman and Rh⁺ man
  D) Rh⁺ woman and Rh^- man
  Show Answer
  The correct answer is A .
• Question 920:

  The mutation theory of organic evolution was propounded by?

  Options:
  A) Gregor Mendel
  B) Hugo de Vries
  C) Jean Lamarck
  D) Charles Darwin
  Show Answer
  The correct answer is B .