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 11: The urinary tubules of the kidney function through Options:
  A) osmosis and diffusion
  B) active transport and osmosis
  C) ultrfiltration and selective reabsorption
  D) active transport and cytoplasmic streaming
  Show Answer
  The correct answer is C .
• Question 12:

  Metamorphosis is a biological process that involves

  Options:
  A) The growth and development of an organism from a zygote to an adult
  B) The change in form and structure during the life cycle of certain organisms
  C) The regeneration of lost body parts in an organism
  D) The transformation of an organism from an adult stage to a larval stage
  Show Answer
  The correct answer is B .
• Question 13:

  

  In the diagram, the structure labelled X is for

  Options:
  A) attachment
  B) feeding
  C) seeing
  D) breathing
  Show Answer
  The correct answer is A .
• Question 14: Haemophilia results from the mutation of the genes Options:
  A) in the sex chromosome
  B) which control skin colour
  C) which control the mechanism for blood-clotting
  D) which control the formation of haemoglobin
  Show Answer
  The correct answer is C .
• Question 15: Fertilizers are lost from the soil through Options:
  A) sheet erosion and evaporation
  B) leaching, underground seepages and run-off
  C) sheet erosion, gully erosion and wind erosion
  D) wind erosion and heavy rainfall
  Show Answer
  The correct answer is B .
• Question 16: The natural tendency of organisms as they evolve is to Options:
  A) decrease in size
  B) increase in number
  C) develop specialize structure
  D) feed indiscriminately
  Show Answer
  The correct answer is C .
• Question 17: Seed plants are the most dominant vegetation on land because of Options:
  A) their motile gamates
  B) their ability to photosynthesize
  C) efficient seed dispersal
  D) availability of water
  Show Answer
  The correct answer is C .
• Question 18: 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 .
• Question 19:

  Irish potato is a

  Options:
  A) bulb
  B) tap root
  C) rhizome
  D) root tuber
  E) stem tuber
  Show Answer
  The correct answer is E .
• Question 20:

  

  The biomass is likely to increase in the sequence

  Options:
  A) 1 → 2 → 4 → 5
  B) 1 → 3 → 4 → 5
  C) 3 → 5 → 6 →7
  D) 5 → 4 → 3 → 1
  Show Answer
  The correct answer is D .