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 2311: The number of alleles controlling blood groups in humans Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is A .
• Question 2312:

  The membrane around the vacuole is known as

  Options:
  A) Elaioplast
  B) Amyloplast
  C) Tonoplast
  D) Cytoplast
  Show Answer
  The correct answer is C .
• Question 2313: Soil erosion CANNOT be controlled by Options:
  A) planting cover crops
  B) contouring of sloping ground
  C) terracing of slopes
  D) laying of mulch
  E) burning of bush
  Show Answer
  The correct answer is E .
• Question 2314: Which of the following conditions is NOT necessary for photosynthesis to take place? Options:
  A) ChlorophyII
  B) Light
  C) Carbon(II)oxide
  D) Carbon(IV)oxide
  Show Answer
  The correct answer is C .
• Question 2315:

  Use the diagram to answer the question.

  The structure labelled i is

  Options:
  A) photosensitive
  B) radiosensitive
  C) chemoreceptive
  D) tactile
  Show Answer
  The correct answer is D .
• Question 2316: Two main distinguishing features of the cervical vertebra are the presence of Options:
  A) short neural spine and vertebraterial canal
  B) prozygapophysis and cervical ribs
  C) large centrum and cervical ribs
  D) vertebraterial canal and large centrum
  Show Answer
  The correct answer is A .
• Question 2317: A characteristic feature of tropical rainforest is that it Options:
  A) Contains trees with narrow leaves
  B) Contains large number of plant species
  C) Contains fewer number of plant species
  D) Has total annual rainfall of less than 50cm
  Show Answer
  The correct answer is B .
• Question 2318: In the Burret test, some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive results? Options:
  A) Mercurous nitrates
  B) Copper sulphate
  C) Mercuric nitrate
  D) Sodium carbonate
  E) Ammonium hydroxide
  Show Answer
  The correct answer is B .
• Question 2319: Nitrifying bacteria keep the soil fertile by Options:
  A) converting nitrate to nitrogen
  B) converting ammonium salt to nitrate
  C) converting atmospheric nitrogen to plant nitrogen
  D) converting nitrate to nitrous oxide
  E) converting atmospheric nitrogen to nitrates
  Show Answer
  The correct answer is B .
• Question 2320: If Benedict's solution gives a positive result in a food test, the food contains Options:
  A) sugar
  B) protein
  C) oil
  D) fat
  E) cellulose
  Show Answer
  The correct answer is A .