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 261: Which of the following will not allow osmosis to take place Options:
  A) pig's bladder
  B) cellophane
  C) parchment paper
  D) transparent polythene
  E) cow's bladder
  Show Answer
  The correct answer is D .
• Question 262:

  Which of the following statements is true regarding cell growth?

  Options:
  A) Cell growth is solely influenced by external factors
  B) Cell growth is a continuous process throughout the life of a cell
  C) Cell growth involves an increase in the number of organelles within a cell
  D) Cell growth occurs by cell division
  Show Answer
  The correct answer is D .
• Question 263: the function of lenticels is Options:
  A) to remove excess water in plant
  B) to absorb water from the atmosphere
  C) for gaseous exchange
  D) to absorb light
  E) to store food
  Show Answer
  The correct answer is C .
• Question 264:

  

  The process of pollination involves the transfer of pollens from

  Options:
  A) II to III
  B) IV to I
  C) I to II
  D) III to IV
  Show Answer
  The correct answer is A .
• Question 265:

  

  The part labelled 3 is the

  Options:
  A) leaf scar
  B) lenticle
  C) axillary bud
  D) girdle scar
  Show Answer
  The correct answer is C .
• Question 266:

  Ecological succession refers to

  Options:
  A) The movement of organisms from one habitat to another
  B) The competition among species for limited resources
  C) The process of natural selection in a population
  D) The gradual and predictable change in a community over time
  Show Answer
  The correct answer is D .
• Question 267: The dorsal and anal fins of fish are used for Options:
  A) Upward movement
  B) Controlling rolling
  C) Downward movement
  D) Steering
  E) Buoyancy
  Show Answer
  The correct answer is B .
• Question 268: The average number of individuals of a species per unit area of the habitat is the Options:
  A) population density
  B) population frequency
  C) population size
  D) population distribution
  Show Answer
  The correct answer is A .
• Question 269: An insect whose economic importance is both harmful and beneficial is the Options:
  A) Tsetsefly
  B) Blackfly
  C) Mosquito
  D) Butterfly
  Show Answer
  The correct answer is D .
• Question 270:

  Ozone hole refers to

  Options:
  A) hole in ozone layer
  B) decrease in the ozone layer in troposphere
  C) decrease in thickness of ozone layer in stratosphere
  D) increase in the thickness of ozone layer in troposphere
  Show Answer
  The correct answer is C .