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 171: Refrigeration, as a method of preservation, has ONE of the following characteristics: Options:
  A) Kills all the bacteria
  B) Kill most of the bacteria
  C) Makes the bacteria inactive
  D) Dries food
  E) Hydrolyses food
  Show Answer
  The correct answer is C .
• Question 172: If a flower is protandrous then it Options:
  A) must be unisexual
  B) has an undeveloped androecium
  C) has no androecium
  D) must be insect-pollinated
  E) can prevent self pollination
  Show Answer
  The correct answer is E .
• Question 173:

  A freshwater plant such as water lily can solve the problem of buoyancy by the possession of?

  Options:
  A) aerenchyma tissues
  B) dissected leaves
  C) thin cell walls of the epidermis
  D) water-repelling epidermis
  Show Answer
  The correct answer is A .
• Question 174: Which of the following is the common to the mosquito, housefly and blackfly? Options:
  A) they undergo complete metamorphosis
  B) they are parasites of man
  C) their immature stages are aquatic
  D) their adults have two pairs of wings
  Show Answer
  The correct answer is A .
• Question 175: Plant growth can be artificially stimulated by the addition of Options:
  A) gibberellin
  B) kinin
  C) abscisic acid
  D) ethylene
  Show Answer
  The correct answer is A .
• Question 176:

  Which of the following is NOT regarded as a pollutanton land or in the air?

  Options:
  A) Smoke
  B) Nitrogen
  C) Noise
  D) Sulphur dioxide
  Show Answer
  The correct answer is B .
• Question 177: The breakdown of fats and oils into simpler absorbable compounds is catalyzed by the group of enzymes called Options:
  A) lipases
  B) hydrolases
  C) amylases
  D) peptidases
  Show Answer
  The correct answer is A .
• Question 178: which of these worms is beneficial to man? Options:
  A) Hookworm
  B) Tapeworm
  C) Roundworm
  D) Earthworm
  E) Guinea worm
  Show Answer
  The correct answer is D .
• Question 179:

  Which of the reproductive system in mammals secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system?

  Options:
  A) Cowper's gland
  B) Prostate gland
  C) Vas deferens
  D) Seminal Vesicle
  Show Answer
  The correct answer is A .
• Question 180: The maize grain is regarded as a fruit and not a seed because Options:
  A) It is covered by a sheath of leaves
  B) The testa and fruit wall fuse after fertilization
  C) It has both endosperm and cotyledon
  D) It has coleorhiza and coleoptile
  E) The pericarp and seed coat are separated
  Show Answer
  The correct answer is B .