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 111: Double fertilization in higher plants is significant because it ensures the Options:
  A) formation of a fertile embryo
  B) formation of a fertile embryo and the endosperm
  C) developement of the seed
  D) developement of the fruit
  Show Answer
  The correct answer is B .
• Question 112: Sources of air pollutants are Options:
  A) industrial chimneys, burning fossil oils and river dam
  B) sulphur dioxide, acid rain and pesticides
  C) sulphur mines, vehicle exhausts and aerosols
  D) sewage, smoke and old vehicle
  Show Answer
  The correct answer is C .
• Question 113:

  A plant tissue that carries water and mineral salt is

  Options:
  A) Xylem
  B) Cortex
  C) Phloem
  D) Cambium
  Show Answer
  The correct answer is A .
• Question 114:

  

  The neural arch is labelled

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is B .
• Question 115: Adaptive features of plants to desert conditions include Options:
  A) thick barks, succulent stems and sunken stomata
  B) thin barks, succulent stems and sunken stomata
  C) thin barks, air floats on stems and sunken stomata
  D) air spaces in tissues, adventitious roots and thick barks
  Show Answer
  The correct answer is A .
• Question 116: Which of the following is NOT a waste product of plants? Options:
  A) Auxins
  B) Gum
  C) Resins
  D) tanins
  Show Answer
  The correct answer is A .
• Question 117:

  

  In the diagram, the structure labelled I is sensitive to

  Options:
  A) light and touch
  B) chemicals only
  C) light only
  D) chemicals and touch
  Show Answer
  The correct answer is A .
• Question 118: The biological factor that is unique to each individual is the Options:
  A) DNA
  B) eye colour
  C) blood group
  D) RNA
  Show Answer
  The correct answer is A .
• Question 119: The hormones which regulates the amount of glucose in the blood is called Options:
  A) adrenalin
  B) auxin
  C) insulin
  D) thyroxine
  Show Answer
  The correct answer is C .
• Question 120: 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 .