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: The opening of the stoma is controlled by the Options:
  A) presence of a pore
  B) increase in solute concentration in the guard cells
  C) presence of guard cells
  D) decrease in solute concentration in the guard cells
  Show Answer
  The correct answer is B .
• Question 12: Blood grouping in human beings is derived from combinations of Options:
  A) two different alleles
  B) four different alleles
  C) three different alleles
  D) two different genes
  Show Answer
  The correct answer is B .
• Question 13:

  

  Use the diagram above to answer this question.

  In which plantation are all the trees between the height of 2-4m?

  Options:
  A) lll
  B) ll
  C) l
  D) lV
  Show Answer
  The correct answer is A .
• Question 14: Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because Options:
  A) the deposit have remains of organisms characteristic of when they were formed
  B) different strata have remains of organisms of the same kind
  C) only organisms with strong parts are fossilized
  D) most animal and plant fossils bear little resemblance to present day living specimens
  Show Answer
  The correct answer is A .
• Question 15: Gaseous exchange in the lungs takes place in the Options:
  A) alveoli
  B) bronchi
  C) bronchioles
  D) trachea
  Show Answer
  The correct answer is A .
• Question 16: The behavioural adaptation in social insects could best be described as Options:
  A) symbiosis
  B) saprophytism
  C) parasitism
  D) commensalisms
  Show Answer
  The correct answer is A .
• Question 17:

  

  The structure labelled 2 is the

  Options:
  A) compound eye
  B) ocellus
  C) antenna
  D) labial palp
  Show Answer
  The correct answer is D .
• Question 18: In a population of living things, the parameters of size, height, weight and colour are examples of Options:
  A) discontinuous variation
  B) continuous variation
  C) physiological variation
  D) non-heritable variation
  Show Answer
  The correct answer is B .
• Question 19:

  Botany is also known as

  Options:
  A) Phytology
  B) Phycology
  C) Pedology
  D) Plantophyta
  Show Answer
  The correct answer is A .
• Question 20: Starting from the skull end the vertebrate are arranged in the following order Options:
  A) axis, atlas, cervical, thoracic and lumber
  B) atls, cervical, axis, thoracic and lumber
  C) atlas, axis, thoracic, cervical and lumber
  D) atlas, axis, cervical, thoracic and lumber
  E) atlas, thoracic, cervical, axis and lumber
  Show Answer
  The correct answer is D .