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 941:

  The association between two organisms living together in which only one benefits from the association while the other is neither benefited nor harmed is

  Options:
  A) Predation
  B) Competition
  C) Commensalism
  D) Dispersal
  Show Answer
  The correct answer is C .
• Question 942:

  Which of the following processes removes carbon from the atmosphere?

  Options:
  A) putrefaction
  B) photosynthesis
  C) volcanic eruption
  D) burning of fuels
  Show Answer
  The correct answer is B .
• Question 943: A plant which has a horizontal underground stem is Options:
  A) rhizome
  B) corm
  C) creeper
  D) tuber
  E) bulb
  Show Answer
  The correct answer is A .
• Question 944: Soil with the finest particles is called Options:
  A) silt
  B) clay
  C) sand
  D) gravel
  Show Answer
  The correct answer is B .
• Question 945:

  Mass of a crucible = 10g,

  Mass of a crucible and soil before heating =29g

  Mass of a crucible and soil after heating = 18g

  From the information above, determine the percentage of water in the given soil sample?

  Options:
  A) 20%
  B) 25%
  C) 40%
  D) 60%
  Show Answer
  The correct answer is D .
• Question 946: When a healthy shoot of a flowering plant is illuminated from one side, auxins, accumulate on the Options:
  A) non-illuminated side of the shoot
  B) illuminated side of the shoot
  C) upper side of the shoot
  D) lower side of the shoot
  Show Answer
  The correct answer is A .
• Question 947:

  What is the function of contractile vacuole in paramecium?

  Options:
  A) Produces Enzymes
  B) Gets rid of excreta
  C) Stores and digest food
  D) Gets rid of excess water
  Show Answer
  The correct answer is D .
• Question 948: The failure of transport and respiratory systems in plants as well as the presence of reddish colour in stems and leaves result from the deficiency of Options:
  A) magnesium
  B) nitrogen
  C) potassium
  D) phosphorus
  Show Answer
  The correct answer is C .
• Question 949: A food substance which produces red colouration with Sudan III contain Options:
  A) protein
  B) sugar
  C) starch
  D) cellulose
  E) fat
  Show Answer
  The correct answer is E .
• Question 950: In man, identical twins occur when Options:
  A) An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
  B) an ovum fertilized by two sperms and then divides into two, each forming an embryo
  C) two ova are fertilized at the same tine each forming an embryo
  D) two ova are fertilized by a single sperm each forming an embryo after fertilization
  E) one ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
  Show Answer
  The correct answer is A .