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: In which of the following species is the biomass of an individual the smallest ? Options:
  A) Agama sp
  B) Bufo sp
  C) Spirogyra sp
  D) Tilapia sp
  Show Answer
  The correct answer is C .
• Question 782: Fehling's solution will readily change colour from blue to reddish colour when it is Options:
  A) mixed with sugar solution in the cold
  B) warmed or heated by itself
  C) mixed with reducing sugar in the cold
  D) warmed or heated with complex solution
  E) warmed with a solution of reducing sugar
  Show Answer
  The correct answer is E .
• Question 783: Which scenario would cause a covalent bond to form? Options:
  A) Two atoms share electrons so they can fill their outer shells
  B) The constant motion of electrons and the creation of charge imbalances bonds two molecules together
  C) A hydrogen atom with a slight positive charge is attracted to a negative charge of another molecule or atom
  D) One atom loses one or more electrons and the other atom gains one or more electrons
  Show Answer
  The correct answer is A .
• Question 784: Plants tend to prevent overcrowding by means of efficient Options:
  A) water uptake
  B) seed germination
  C) pollination
  D) seed dispersal
  Show Answer
  The correct answer is D .
• Question 785: Blood clotting is initiated by Options:
  A) Leucocytes
  B) Platelets
  C) Haemolymph
  D) Haemoglobin
  E) Erythrocytes
  Show Answer
  The correct answer is B .
• Question 786: The cell of an onion bulb can be differentiated from a cheek cell by the presence of Options:
  A) plasmalemma
  B) chloroplast
  C) cell wall
  D) nucleus
  Show Answer
  The correct answer is C .
• Question 787:

  

  Use the diagram above to answer this question.

  Which of the following is a true feature of plantation ll?

  Options:
  A) it has the highest number of trees of about 2m high.
  B) it has highest number of trees
  C) it has the highest number of tall trees
  D) the height of all its trees range between 2m and 6m
  Show Answer
  The correct answer is A .
• Question 788: The major site of photosynthesis in the leaf is the Options:
  A) palisade parenchyma
  B) mesophyll parenchyma
  C) upper epidermis
  D) lower epidermis
  Show Answer
  The correct answer is A .
• Question 789: Physiological adaptation to very dry condition in animals is called Options:
  A) hibernation
  B) aestivation
  C) rejuvenation
  D) xeromorphism
  Show Answer
  The correct answer is B .
• Question 790:

  

  Using the diagram, sexual reproduction is illustrated in

  Options:
  A) ii
  B) i
  C) iii
  D) iv
  Show Answer
  The correct answer is B .