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: A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin? Options:
  A) AA
  B) OO
  C) AO
  D) AS
  E) SS
  Show Answer
  The correct answer is D .
• Question 522: To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to Options:
  A) feed the animals in the herd with more food
  B) cross-breed his animals with a different herd
  C) inbreed the animals in his herd
  D) prevent disease in herd
  Show Answer
  The correct answer is C .
• Question 523: The substance that is responsible for optical dominance in plants is known as Options:
  A) gibberellin
  B) tannin
  C) auxin
  D) kinin
  Show Answer
  The correct answer is C .
• Question 524:

  An ecological instrument used to measure wind direction is?

  Options:
  A) Secchi disc
  B) wind vane
  C) anemometer
  D) slope gauge
  Show Answer
  The correct answer is B .
• Question 525: A tapeworm has no alimentary canal because Options:
  A) It is autotrophic
  B) It does not feed
  C) It has no enzymes
  D) Its body absorbs digested food
  E) The suckers on the scolex suck blood
  Show Answer
  The correct answer is D .
• Question 526: One of the most effective ways of controlling guinea worm is by Options:
  A) treating the disease
  B) public enlightenment campaigns
  C) accelerating rural developmnet
  D) provision of portable drinking water
  Show Answer
  The correct answer is D .
• Question 527: The earliest form of life in animal kingdom is the Options:
  A) class
  B) amphibian
  C) aves pisces
  D) reptilia
  Show Answer
  The correct answer is C .
• Question 528:

  The basis of growth involves the following processes except

  Options:
  A) Cell reduction
  B) Cell division
  C) Cell enlargement
  D) Cell differentiation
  Show Answer
  The correct answer is A .
• Question 529: The following are example of morphological variation except Options:
  A) size
  B) ability to taste PTC
  C) color
  D) fingerprint
  Show Answer
  The correct answer is B .
• Question 530: The hereditary characters in plants and animals are located on the Options:
  A) gene
  B) mucleus
  C) chromosome
  D) cell
  Show Answer
  The correct answer is C .