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 691: An ecological succcession often leads to Options:
  A) an increase in species diversity
  B) decrease in species diversity
  C) an unstable community
  D) the dispersal of species
  Show Answer
  The correct answer is A .
• Question 692: The removal of a man’s pancreas by surgical operation can affect only the digestion of Options:
  A) Starch
  B) Starch, protein and fats
  C) Oils and fats
  D) Proteins
  E) Carbohydrates and fats
  Show Answer
  The correct answer is B .
• Question 693:

  Which of the following relationship involves only one organism?

  Options:
  A) Saprophytism
  B) Commensalism
  C) Parasitism
  D) Symbiosis
  Show Answer
  The correct answer is A .
• Question 694: Which of these is not a type of soil? Options:
  A) Sand
  B) Granite
  C) Loam
  D) Clay
  E) Sandy loam
  Show Answer
  The correct answer is B .
• Question 695:

  

  What would happen if solution Y is more concentrated than solution X in fig 2?

  Options:
  A) The level of X would rise, Y would falls
  B) The level of X would rise, Y would rise
  C) The level of X and Y stands the same
  D) The level of Y would rise, X would fall.
  Show Answer
  The correct answer is D .
• Question 696: Which of the following statements about the dentition of man is INCORRECT ? man has Options:
  A) More molars than incisors
  B) No diastema
  C) The same number of teeth on upper and lower jaw
  D) A total of thirty-two teeth
  E) A total of six molars
  Show Answer
  The correct answer is E .
• Question 697: The matured sex cell which takes part in sexual reproduction is referred to as Options:
  A) gamete
  B) fetus
  C) embryo
  D) zygote
  Show Answer
  The correct answer is A .
• Question 698: Underground stems which grow horizontally through the soil are Options:
  A) Bulbs
  B) Rhizomes
  C) Runners
  D) Corms
  E) Stolons
  Show Answer
  The correct answer is B .
• Question 699: Secondary thickening is initiated in a dicotyledonous stem by the Options:
  A) xylem parenchyma
  B) secondary phloem
  C) endodermis
  D) cambium
  Show Answer
  The correct answer is D .
• Question 700:

  

  In the diagram, the organs for attachments to the lining of the host's intestine are labelled

  Options:
  A) ii and iii
  B) iii and iv
  C) i and ii
  D) i and iii
  Show Answer
  The correct answer is A .