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 1061: In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces Options:
  A) alcohol
  B) oxygen
  C) carbon dioxide
  D) energy
  E) ethanol
  Show Answer
  The correct answer is C .
• Question 1062: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively? Options:
  A) pawpaw X will become turgid
  B) both will increase in size
  C) pawpaw Y will become turgid
  D) both will decrease in size
  Show Answer
  The correct answer is C .
• Question 1063: The order of passage of food in the digestive system is? Options:
  A) ileum → caecum → large intestine → rectum
  B) ileum → colon → caecum →rectum
  C) large intestine →ileum → caecum →rectum
  D) colon → caecum → ileum →rectum
  Show Answer
  The correct answer is A .
• Question 1064: A germinating seed requires oxygen which is essential for Options:
  A) converting carbonhydrate into glucose
  B) Transporting energy from part of the plant to another
  C) The production of energy by oxidising essential carbonhydrate
  D) hydrolysis of protein
  E) The formation of water molecules within the germinating seed
  Show Answer
  The correct answer is C .
• Question 1065:

  The reason why hospitals use saline solutions as drip instead of water is

  Options:
  A) because salt is a preservative
  B) to prevent contamination of the body
  C) to maintain the composition of body fluids
  D) to increase the number of blood cells
  Show Answer
  The correct answer is C .
• Question 1066: The scientific study of life is Options:
  A) Botany
  B) Biology
  C) Zoology
  D) Ecology
  Show Answer
  The correct answer is B .
• Question 1067: When a peacock displays its colourful feathers, it is Options:
  A) ready for a fight
  B) protecting itself from predators
  C) protecting its mate from predators
  D) courting a female
  Show Answer
  The correct answer is D .
• Question 1068: Which of the following represents the sequence of protein hydrolysis? 1. polypeptides 2. Amino acides 3. Proteins 4. Peptones Options:
  A) 3 → 1 → 2 → 4
  B) 3 → 2 →4 → 1
  C) 3 → 1 →2 → 4
  D) 3 → 4 → 1 → 2
  E) 3 → 1 → 4 → 2
  Show Answer
  The correct answer is D .
• Question 1069: Flatworms and roundworms are said to be invertebrates because Options:
  A) they are small animals
  B) they can live inside the vertebrates
  C) some of them are unicellular
  D) they have no backbones
  E) they are parasitic
  Show Answer
  The correct answer is D .
• Question 1070: An insect whose economic importance is both harmful and beneficial is the Options:
  A) Tsetsefly
  B) Blackfly
  C) Mosquito
  D) Butterfly
  Show Answer
  The correct answer is D .