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 521: Which of the following is a measure for the control of bilharzia? Options:
  A) Cutting low brushes around homes
  B) Application of molluscicides in water bodies
  C) Screening windows and doors with mosquito nets
  D) Application of herbicides in water bodies
  Show Answer
  The correct answer is B .
• Question 522: A married couple has 10 children and they are all girls. Which of the following is the CORRECT explanation? Options:
  A) The woman is incapable of producing male children
  B) The man’s sperms are very weak
  C) The man is not athletic enough
  D) The Y component of the men’s sex chromosomes was always involved
  E) The X component of the man’s sex chromosomes was always involved
  Show Answer
  The correct answer is E .
• Question 523: The spores of mucor are dispersed by Options:
  A) water
  B) wind
  C) insects
  D) explosive mechanism
  Show Answer
  The correct answer is B .
• Question 524: In the internal structure of plants, a wide pith in the centre is common to Options:
  A) dicot stems and monocot stems
  B) dicot stem and monocot roots
  C) dicot roots and monocot roots
  D) dicot roots and monocot stems
  Show Answer
  The correct answer is B .
• Question 525:
  

  The part numbered 12 is

  Options:
  A) pectoral fin
  B) scale
  C) opercular plate
  D) gill plate
  E) pectoral girdle
  Show Answer
  The correct answer is C .
• Question 526:

  A characteristic of the phylum coelenterata is that

  Options:
  A) most of them are marine
  B) they possess a gut with a single opening
  C) thy possess numerous pores on their body
  D) they are bilaterally symmetrical
  Show Answer
  The correct answer is B .
• Question 527:

  Which of the following processes is involved in the reproduction of developing organisms?

  Options:
  A) Budding
  B) Germination
  C) Fertilization
  D) Pollination
  Show Answer
  The correct answer is C .
• Question 528: Pawpaw seeds collected from a tree with many desirable agronomic qualities did not give rise to plants of desirable character as the parent because Options:
  A) seeds are not reliable for propagating plants
  B) uncontrolled out-crossing can introduced unwanted variability
  C) vegetative propagation is best form of reproduction of all crop
  D) seeds were not physiologically mature at the harvest
  Show Answer
  The correct answer is B .
• Question 529: An organism having one pair of identical genes is Options:
  A) a heterozygote
  B) a hybride
  C) an allelomorph
  D) a homozygote
  E) a diploid
  Show Answer
  The correct answer is D .
• Question 530: 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 .