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 21: The matured sex cell which takes part in sexual reproduction is referred to as Options:
  A) gamete
  B) fetus
  C) embryo
  D) zygote
  Show Answer
  The correct answer is A .
• Question 22:

  

  Primary consumers are found in

  Options:
  A) 1, 2 and 3
  B) 1, 3 and 7
  C) 2, 3 and 7
  D) 2, 4 and 5
  Show Answer
  The correct answer is C .
• Question 23: When spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it Options:
  A) Remains unchanged
  B) Takes up water an burst
  C) Absorbs a little water
  D) Loses water and shrivels
  E) Becomes turgid
  Show Answer
  The correct answer is D .
• Question 24:

  The part labeled III in the above diagram is

  Options:
  A) Root
  B) Gills
  C) Hyphae
  D) Rhizoids
  Show Answer
  The correct answer is C .
• Question 25: If the cross of a red-flowered plant with a white flowered plant produces a pink flowered plant, this is an example of Options:
  A) codominance
  B) incomplete dominance
  C) mutation
  D) linkage
  Show Answer
  The correct answer is B .
• Question 26: Chewing the cud is an adaptation peculiar to Options:
  A) Herbivores
  B) Omnivores
  C) Rodents
  D) Ruminants
  Show Answer
  The correct answer is D .
• Question 27: Mineral salts can be absorbed into the roots by Options:
  A) osmosis only
  B) osmosis and diffusion
  C) diffusion and active transport
  D) imbibition only
  Show Answer
  The correct answer is C .
• Question 28: Choose the sequence which represents the correct order of organisms in a food chain. Options:
  A) Grass, snake, toad, grasshopper, hawk
  B) Grass, grasshopper, toad, snake, hawk
  C) Grass, grasshopper, snake, toad, hawk
  D) Grass, snake, grasshopper, toad, hawk
  E) Grass, toad, snake, grasshopper, hawk
  Show Answer
  The correct answer is B .
• Question 29: Movement of minerals and chemical compounds with a plant occurs during Options:
  A) osmosis
  B) translocation
  C) transpiration
  D) diffusion
  Show Answer
  The correct answer is B .
• Question 30: Which of the following will be first digested if ingested at the same time? Options:
  A) Cooked beans
  B) Cooked rice
  C) cod liver oil
  D) Roasted beef
  Show Answer
  The correct answer is B .