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 91: The special pigment for colour change in chameleon is Options:
  A) melanin
  B) carotenoid
  C) chromatin
  D) chromatophore
  Show Answer
  The correct answer is D .
• Question 92: The spores of ferns are dispersed by Options:
  A) wind
  B) water
  C) insects
  D) explosive mechanism
  E) sporophyte
  Show Answer
  The correct answer is D .
• Question 93:

  

  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 .
• Question 94: The most important factors which influence an organism's way of life in its habitat are Options:
  A) the physicals and biotic enviroment
  B) Food and water availability
  C) temperature, water, light and predator-prey relationship
  D) competition for food and spaces
  Show Answer
  The correct answer is C .
• Question 95:

  

  Use the diagram above to answer this question.

  Which of the organisms is characterized by the possession of a chitinous exoskeleton?

  Options:
  A) l
  B) ll
  C) lll
  D) lV
  Show Answer
  The correct answer is A .
• Question 96: Which of the following is lacking in the diet of a person with kwashiorkor? Options:
  A) proteins
  B) carbohydrates
  C) minerals
  D) vitamins
  Show Answer
  The correct answer is A .
• Question 97: The excretory organ in insects is the Options:
  A) kidney
  B) malpighian tubule
  C) flame cell
  D) nephridium
  Show Answer
  The correct answer is B .
• Question 98: When the mixture of a food substance and Benedict's solution was warmed, the solution changed from blue to black-red. This indicates the presence of Options:
  A) reducing sugar
  B) fatty acid
  C) sucrose
  D) amino acid
  Show Answer
  The correct answer is A .
• Question 99: Secondary thickening is initiated in a dicotyledonous stem by the Options:
  A) xylem parenchyma
  B) secondary phloem
  C) endodermis
  D) cambium
  Show Answer
  The correct answer is D .
• Question 100: Which of the following insects lays its eggs in horny, purse-like cases? Options:
  A) Mosquito
  B) Butterfly
  C) Termite
  D) Cockroach
  Show Answer
  The correct answer is D .