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 281: The stage in the life history of a moth responsible for the destruction of agricultural crops is the Options:
  A) nymph
  B) imago
  C) pupa
  D) caterpillar
  Show Answer
  The correct answer is D .
• Question 282: The two types of human tapeworm can be distinguished by the presence or absence of Options:
  A) scolex
  B) hook
  C) head
  D) sucker
  E) proglottis
  Show Answer
  The correct answer is B .
• Question 283: Which of the following vertebrae lacks a centrum? Options:
  A) Atlas
  B) Axis
  C) Thoracic
  D) Lumbar
  Show Answer
  The correct answer is A .
• Question 284: 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 285: The surface of an alveolus in a mammal is well supplied with tiny blood vessels known as Options:
  A) arterioles
  B) venules
  C) arteries
  D) capillaries
  Show Answer
  The correct answer is D .
• Question 286: Complex social behaviour and organization are found mostly in Options:
  A) insects
  B) birds
  C) reptiles
  D) mammals
  Show Answer
  The correct answer is D .
• Question 287: Insect show consideration powers of water conservation. This is due to the fact that Options:
  A) The chitinous cuticle is impregnated with tanned protein
  B) Nitrogenous waste is eliminated as urea
  C) Chitin is impermeable to water
  D) The malpighian tubules are impermeable to water
  E) The curticle is covered with wax
  Show Answer
  The correct answer is C .
• Question 288: During thunderstorms the energy of lightning discharge causes Options:
  A) oxygen and nitrogen to combine
  B) more carbon dioxide to be formed
  C) nitrites to be converted to nitrates
  D) nitrates to be converted to nitrogen
  E) death
  Show Answer
  The correct answer is A .
• Question 289: 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 .
• Question 290: The equation that can be used to summarize the process of anaerobic breakdown of sugar is Options:
  A) C₂H₁₂O₆ 2C₂H₅OH + 2CO₂
  B) 6Co₂ + 6H₂O C₆H₁₂O₆ + 6O₂
  C) C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂O + enegy
  D) C₆H₁₂O₆ 2C₂H₅OH + 2CO₂ + energy
  Show Answer
  The correct answer is D .