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 11: i. Growth is mainly apical ii. Growth is specific with definite shape iii. Growth is throughout life. Which of the above correctly describes the growth pattern in plants? Options:
  A) i, ii and iii only
  B) ii and iii only
  C) i and ii only
  D) i and iii only
  Show Answer
  The correct answer is D .
• Question 12: 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 13: In vegetation propagation, which of the following requires part of another plant to develop? Options:
  A) Scion
  B) Bulb
  C) Rhizome
  D) Sucker
  Show Answer
  The correct answer is A .
• Question 14: The specialized pigment cells that are involved in colouration and colour change in animals Options:
  A) xanthophyl
  B) chromatophores
  C) chromatophyll
  D) melanin
  Show Answer
  The correct answer is B .
• Question 15: The part of the ear that is concerned with balance is the Options:
  A) semi-circular canals
  B) incus
  C) malleus
  D) Eustachian tube
  Show Answer
  The correct answer is A .
• Question 16:
  

  From the diagram above, the structure labelled I is the

  Options:
  A) incus
  B) malleus
  C) hammer
  D) stapes
  Show Answer
  The correct answer is D .
• Question 17:

  

  In the diagram, the variation illustration is

  Options:
  A) discontinuous
  B) morphological
  C) physiological
  D) biochemical
  Show Answer
  The correct answer is B .
• Question 18:

  One of the following is a process of transmission of hereditary characteristics by chromosomes

  Options:
  A) Genes relating to the same character occupy identical locations on the chromosomes
  B) Separation of homologous chromosomes into four daughter cells
  C) Separation of gametes during fertilization
  D) Dictating the formation of a protein by a gene in a chromosome
  Show Answer
  The correct answer is D .
• Question 19:

  

  In the illustration above, the genotypes of the offsprings are

  Options:
  A) 1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
  B) 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
  C) 2 homozygous smooth : 2 wrinkled
  D) 3 heterozygous smooth : 2 wrinkled
  Show Answer
  The correct answer is B .
• Question 20:

  

  The range at which soil essential elements concentration is recorded for optimal plant growth is marked

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