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 781:

  The probability of a baby being a boy or a girl depends on the contribution of the

  Options:
  A) father's sex cells
  B) father's stomatic chromosome
  C) mother's sex cell
  D) mother's X-chromosome
  Show Answer
  The correct answer is A .
• Question 782:

  

  In the diagram, the eye defect illustrated is

  Options:
  A) myopia
  B) hypermetropia
  C) astigmaism
  D) cataract
  Show Answer
  The correct answer is B .
• Question 783: Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as Options:
  A) Denitrifying bacteria
  B) Nitrifying bacteria
  C) Nitrogen fixing bacteria
  D) Nitrogen freeing bacteria
  E) Nitrogen putrefying bacteria
  Show Answer
  The correct answer is C .
• Question 784: The extract from food substance reacting with sodium hydroxide and copper sulphate solutions will produce violet to purple coloration if Options:
  A) fats are presents
  B) carbohydrate is present
  C) protein is present
  D) reducing sugar is presents
  Show Answer
  The correct answer is C .
• Question 785:

  The immediate product of meiosis in flowering plants is the

  Options:
  A) sporophyte
  B) gametophyte
  C) zygote
  D) pollen grains
  Show Answer
  The correct answer is D .
• Question 786: Nitrification means Options:
  A) conversion of nitrates to nitrogen
  B) fixing nitrogen into plants
  C) conversion of nitrates to nitrites
  D) changing of ammonia to nitrities, then nitrates
  E) nitrogen cycle
  Show Answer
  The correct answer is D .
• Question 787:

  

  Use the diagram below to answer the question that follow:

  The diagram represents a

  Options:
  A) Hygrometer
  B) Wind vane
  C) Anemometer
  D) Rain gauge
  Show Answer
  The correct answer is C .
• Question 788: Salts and water are absorbed in the roots and transported to leaves by Options:
  A) diffusion through the xylem tissues
  B) osmosis through the phloem tissues
  C) diffusion through the phloem tissues
  D) osmosis through the xylem tissues
  Show Answer
  The correct answer is D .
• Question 789: The primary consumer in the food chain below is ................Green plants → Grasshopper → Lizard → Snake → Hawk Options:
  A) Grass hopper
  B) green plants
  C) hawk
  D) lizard
  Show Answer
  The correct answer is A .
• Question 790: The movement of molecules from a region of higher concentration to one of lower concentration is Options:
  A) Diffusion
  B) Transpiration
  C) Osmosis
  D) Translocation
  E) Plasmolysis
  Show Answer
  The correct answer is A .