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 21: Which of the following stimuli is likely to elicit a nastic response in an organism? Options:
  A) Touch
  B) Light intensity
  C) Chemical substances
  D) Gravity
  Show Answer
  The correct answer is C .
• Question 22: When the original king and queen of termites die, they are replaced by Options:
  A) the king and queen of another colony
  B) some adult reproductives from the same colony
  C) some adult workers which are specially fed breed
  D) developing nymphs nurtured as secondary reproductives
  Show Answer
  The correct answer is B .
• Question 23: The biological association that contributes directly to succession in a community is Options:
  A) competition
  B) predation
  C) parasitism
  D) commensalism
  Show Answer
  The correct answer is A .
• Question 24:
  

  Use the diagram above to answer this question.

  The organelle responsible for heredity is labelled

  Options:
  A) l
  B) ll
  C) lll
  D) IV
  Show Answer
  The correct answer is B .
• Question 25: The following distrupts the balance in an ecosystem except Options:
  A) afforestation
  B) deforestation
  C) migration
  D) pollution
  Show Answer
  The correct answer is A .
• Question 26: A true fruit is formed from Options:
  A) a fertilized ovary and other floral parts
  B) a fertilized ovary
  C) a fertilized ovary and calyx
  D) a fertilized ovary and fleshy receptacle
  E) an unfertilized ovary and other floral part
  Show Answer
  The correct answer is B .
• Question 27: Regulation of blood sugar level takes place in the Options:
  A) pancreas
  B) iluem
  C) liver
  D) kidney
  Show Answer
  The correct answer is C .
• Question 28: Which of the following is NOT a characteristic of monocot plants? Options:
  A) Occurrence of secondary thickening
  B) Parallel venation
  C) Scattered vascular bundles
  D) Floral parts arranged in threes
  E) Perianth is usually insignificant
  Show Answer
  The correct answer is A .
• Question 29: The three blood vessels that supply the mammalian alimentary canals are Options:
  A) segmented artery, hepatic artery and coeliac artery
  B) coeliac artery, anterior mesenteric artery and posteroir mesenteric artery
  C) coelic artery, segmental artery and hepatic artery
  D) hepatic artery, anterior mesenteric artery and posterior mesenteric artery
  E) hepatic portal vein, anterior mesenteric artery and posterior mesenteric artery
  Show Answer
  The correct answer is B .
• Question 30:
  

  Which of the labelled parts is the diastema?

  Options:
  A) 2
  B) 3
  C) 4
  D) 6
  Show Answer
  The correct answer is B .