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 1791: Which of the following organs or cells components are common to both the sporophytes and the gametophytes of a fern? Options:
  A) Rhizoids
  B) Roots
  C) Chloroplast
  D) Leaves
  Show Answer
  The correct answer is C .
• Question 1792: The deficiency of vitamin D leads to Options:
  A) scurvy
  B) pellagra
  C) rickets
  D) beriberi
  E) polio
  Show Answer
  The correct answer is C .
• Question 1793:

  In an ecosystem, the organism which changes light energy into stored chemical energy is the

  Options:
  A) Consumer
  B) Producer
  C) Decomposer
  D) Carnivore
  Show Answer
  The correct answer is B .
• Question 1794: Which of the following protects the essential parts of the flower at bud stage? Options:
  A) Stamens
  B) Sepals
  C) Petals
  D) Carpels
  Show Answer
  The correct answer is B .
• Question 1795: Which of the following theories was NOT considered by Darwin in his evolutionary theory? Options:
  A) Variation
  B) Survival of the fittest
  C) Use and disuse
  D) Competition
  Show Answer
  The correct answer is C .
• Question 1796: Physiological adaptation to very dry conditions in animals demonstrates Options:
  A) rejuvenation
  B) xeromorphism
  C) hibernation
  D) aestivation
  Show Answer
  The correct answer is D .
• Question 1797:

  Which of the following waste products in plants is excreted through the stomata and lenticles?

  Options:
  A) carbon dioxide
  B) alkaloids
  C) tannins
  D) anthoocyanins
  Show Answer
  The correct answer is A .
• Question 1798: The axial skeleton of a mammal does not include the bones of the Options:
  A) skull
  B) tail
  C) limbs
  D) back
  E) neck
  Show Answer
  The correct answer is C .
• Question 1799: During the bending of the arm, the biceps muscles Options:
  A) contracts and the triceps muscles relaxes
  B) relaxes and the triceps muscles contracts
  C) and the triceps muscles contract
  D) and the triceps muscles relax
  Show Answer
  The correct answer is A .
• Question 1800: In the Burret test, some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive results? Options:
  A) Mercurous nitrates
  B) Copper sulphate
  C) Mercuric nitrate
  D) Sodium carbonate
  E) Ammonium hydroxide
  Show Answer
  The correct answer is B .