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 21: In woody plants, grass and water vapour are transported across the stems by the Options:
  A) xylem fibres
  B) medullary rays
  C) sieve tubes
  D) phloem fibres
  E) phloem parenchyma
  Show Answer
  The correct answer is A .
• Question 22: Mosses, liverworts and ferns can be grouped together because they Options:
  A) Are all aquatic plants
  B) All grow in deserts
  C) Are seedless plants
  D) Have undifferentiated plant bodies
  E) All produce colourless flowers
  Show Answer
  The correct answer is C .
• Question 23: The maize grain is regarded as a fruit and not a seed because Options:
  A) It is covered by a sheath of leaves
  B) The testa and fruit wall fuse after fertilization
  C) It has both endosperm and cotyledon
  D) It has coleorhiza and coleoptile
  E) The pericarp and seed coat are separated
  Show Answer
  The correct answer is B .
• Question 24: The adaptive importance of the nuptial flight from termite colonies is to Options:
  A) ensure cross-breeding between members of one colony and another
  B) disperse the reproductives in order to establish new colonies
  C) provide abundant food for birds and other animals during the early rains
  D) expel the reproductives so as to provide enough food for other members
  Show Answer
  The correct answer is B .
• Question 25: A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of Options:
  A) taste bud variation
  B) discontinuous variation
  C) morphological variation
  D) continuous variation
  Show Answer
  The correct answer is B .
• Question 26:

  The plants that grow in deserts or very dry areas are referred to as?

  Options:
  A) hydrophytes
  B) epiphytes
  C) xerophytes
  D) mesophytes
  Show Answer
  The correct answer is C .
• Question 27:

  

  Using the diagram, A plant that exhibits the type of reproduction shown in IV is

  Options:
  A) cola
  B) ginger
  C) bryophyllum
  D) sugar cane
  Show Answer
  The correct answer is C .
• Question 28:

  I. Stomata --> Spirogyra

  II. Alveoli --> Earthworm

  III. Malpighian tubule -> Mammal

  IV. Contractile vacuole -> Protozoa

  Which of the above structures is correctly matched with the organisms in which it is found?

  Options:
  A) II
  B) I
  C) IV
  D) III
  Show Answer
  The correct answer is C .
• Question 29:

  

  In the figure above the structure which prevents friction between the bones is

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5
  Show Answer
  The correct answer is B .
• Question 30: I. High birth rate and high immigration rate II. Low birth rate and high immigration rate II. Low mortality rate and low emigration IV. High mortality rate and high emigration rate. Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements? Options:
  A) II and III
  B) I and III
  C) I and IV
  D) I and II
  Show Answer
  The correct answer is B .