Biology 2018 Past Questions | JAMB

Study the following Biology past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

21. Which of the following processes removes carbon from the atmosphere?

  • A. putrefaction
  • B. photosynthesis
  • C. volcanic eruption
  • D. burning of fuels

 22. Which of the following cycles involves the process of precipitation and transpiration?

  • A. water cycles
  • B. carbon cycle
  • C. nitrogen cycle
  • D. oxygen cycle

23. What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?

  • A. availability of nutrients
  • B. availability of water
  • C. intensity of light
  • D. carbon dioxide concentration

24. Which of the following instruments is used to estimate the number of plants in a habitat?

  • A. pooter
  • B. pitfall trap
  • C. quadrant
  • D. sweep net

25.  Which of the following statements is true about sandy soil?

  • A. has limited air space
  • B. is light and easy to dig
  • C. drains slowly
  • D. is heavy and poorly aerated

26. Which of the following organisms is a primary consumer?

  • A. dog
  • B. sheep
  • C. grass
  • D. fungus

27. Study the diagram of a food chain shown and use; it to answer the question.

P —> Q —> R —> S —> T

The organism designated P in the food chain above is normally sustained by energy from

  • A. sunlight
  • B. carbohydrates
  • C. green plants
  • D. mineral salts


Study the diagram of a food chain shown and use; it to answer the question.

P —> Q —> R —> S —> T

Which of the following statements best describes the organism designated R? It

  • A. feeds on S
  • B. is a primary consumer
  • C. is a producer as well as a consumer
  • D. is a secondary consumer

29. Which of the following diseases is not hereditary?

  • A. Albinism
  • B. Scabies
  • C. Haemophilla
  • D. Colour blindness

30. The immediate product of meiosis in flowering plants is the

  • A. sporophyte
  • B. gametophyte
  • C. zygote
  • D. pollen grains
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