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 111:

  

  Why is the part labelled 5 thicker than 6?

  Options:
  A) 5 is the left ventricle and 6 the right ventricle
  B) 6 is the left ventricle and 5 the right ventricle
  C) 5 receives blood from the left auricle and 6 from the right
  D) 5 pumps blood round the body and 6 pumps blood into the lungs
  E) 5 deals with oxygenated blood and 6 deals with deoxygenated blood
  Show Answer
  The correct answer is D .
• Question 112: Which of the following adaptations is NOT concerned with the flight of birds? Options:
  A) Streamlined shape
  B) Presence of powerful muscles
  C) Reduced body weight
  D) Broad sternum
  E) Webbed feet
  Show Answer
  The correct answer is E .
• Question 113:

  

  Ovoviparity is the type of fertilization exhibited by the organism labelled

  Options:
  A) IV
  B) III
  C) II
  D) I
  Show Answer
  The correct answer is C .
• Question 114: Which of the following is true of the children of a heamophilic man who marries a woman that is not haemophilic and does not carry the trait? Options:
  A) All their sons will be haemophlic
  B) all their daughters will be haemophilic
  C) All their daughters will be carriers
  D) all their sons will be carriers
  Show Answer
  The correct answer is C .
• Question 115: Which of the following groups of environmental factors are density-dependent? Options:
  A) Food, salinity, accumulation of matabolites and light
  B) Temperature, salinity predation and disease
  C) Food predation, disease and accumulation of metabolites
  D) Temperature food disease and light
  Show Answer
  The correct answer is C .
• Question 116: In the absence of oxygen, the pyruvic acid produced during glycolysis is converted to CO₂ and Options:
  A) water
  B) glycerol
  C) ethanol
  D) citric acid
  Show Answer
  The correct answer is C .
• Question 117: What part of the central nervous system is concerned with answering an examination question Options:
  A) Cerebrum
  B) Cerebellum
  C) Medulla oblongata
  D) Spinal cord
  Show Answer
  The correct answer is A .
• Question 118: What is the primary function of cofactors? Options:
  A) To aid in enzyme function
  B) To synthesize enzymes
  C) To inhibit enzymes
  D) To break down old enzymes
  Show Answer
  The correct answer is A .
• Question 119: Asexual reproduction does NOT occur in Options:
  A) Mucor, Spirogyra and Paramecium
  B) Penicillium, Paramecium and Amoeba
  C) Mucor, Rhizophus and Penicillium
  D) Amoeba, Spyrogyra and Mucor
  E) Rhizophus, Ascaris and Amoeba
  Show Answer
  The correct answer is E .
• Question 120: Milk protein is hydrolyzed by Options:
  A) renin
  B) amylase
  C) lipase
  D) lactase
  E) pepsin
  Show Answer
  The correct answer is A .