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 661:

  The greatest influence on a stable ecosystem in nature is exerted by

  Options:
  A) man
  B) pollution
  C) animals
  D) rainfall
  Show Answer
  The correct answer is A .
• Question 662: When oil is poured into the breeding site of mosquitoes, it Options:
  A) deprives the larvae of water
  B) kills the adults
  C) suffocates the pupae
  D) slows doen egg development
  Show Answer
  The correct answer is C .
• Question 663: Which of the following statements is not true of a fish? Options:
  A) respires with the use of gills
  B) covered with scales
  C) they are homeothermic
  D) they are poikilothermic
  Show Answer
  The correct answer is C .
• Question 664: Which of the following statements is TRUE of inhalation of air by man? Options:
  A) The ribs are not raised
  B) Diaphragm is raised
  C) Intercostal muscles relax
  D) Pressure of the thoracic cavity increase
  E) Size of thoracic cavity increase
  Show Answer
  The correct answer is E .
• Question 665: Which one of the following is not an excretory product? Options:
  A) Urine
  B) Sweat
  C) Faeces
  D) Salts
  E) Carbon-dioxide
  Show Answer
  The correct answer is C .
• Question 666: Which of the following statements about the rate of transpiration is INCORRECT? It is Options:
  A) Dependent on temperature
  B) Affected by changes in light intensity
  C) Unaffected by humidity
  D) Dependent on air movement
  E) Affected by availability of water
  Show Answer
  The correct answer is C .
• Question 667: When freshly tapped palm wine was kept overnight it was found to be more alcoholic. This effect must have been due to Options:
  A) the addition of saccharin
  B) the addition of sugar
  C) the addition of whisky or local gin
  D) some complex hydrolytic reaction
  E) anaerobic respiration of an organism
  Show Answer
  The correct answer is E .
• Question 668:

  The greatest amount of energy would be obtained by the Oxidation of 100kg of

  Options:
  A) Meat
  B) Butter
  C) Sugar
  D) Biscuit
  Show Answer
  The correct answer is B .
• Question 669: The following are examples of air borne diseases, except Options:
  A) Chicken pox
  B) Cholera
  C) common cold
  D) Whooping cough
  Show Answer
  The correct answer is B .
• Question 670: The spots and stripes of the leopard and tiger are example of Options:
  A) cryptic colouration
  B) warning colouration
  C) disruptive colouration
  D) counter shading
  Show Answer
  The correct answer is C .