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 251:

  The villus in the small intestine is significant because it?

  Options:
  A) increases the surface area for absorption
  B) increases the surface area for digestion
  C) assists in mixing digested food
  D) assists in filtering undigested food
  Show Answer
  The correct answer is A .
• Question 252: What is the genetic ratio of the F₂ generation if members of F generation are allowed to self-pollinate? Options:
  A) 1 tall : 3 short
  B) 3 tall : 1 short
  C) 1 tall : 1 short
  D) 4 short : 0 tall
  E) 4 tall : 0 short
  Show Answer
  The correct answer is B .
• Question 253: Root hairs are developed from the Options:
  A) root apex
  B) epidermis of root
  C) vascular bundles
  D) endodermis
  E) pericycle
  Show Answer
  The correct answer is B .
• Question 254:

  

  In the diagram, The economic importance of the larva is that it

  Options:
  A) is eaten by birds
  B) develop into a moth
  C) resembles the plant on which it lives
  D) feeds on the leaves of crops
  Show Answer
  The correct answer is D .
• Question 255: 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 256: The most abundant group of organisms in the animal kingdom is Options:
  A) mammalia
  B) aves
  C) annelida
  D) insecta
  Show Answer
  The correct answer is D .
• Question 257:

  

  Use the diagram above to answer this question.

  The graph illustrates

  Options:
  A) the highest frequency for height of 2 metres
  B) a discontinuously varying character
  C) a continuously varying character
  D) total yield in a cassava farm
  Show Answer
  The correct answer is B .
• Question 258: The leech and the earthworm belong to the Options:
  A) mollusces
  B) crustaceans
  C) arachnides
  D) annelides
  Show Answer
  The correct answer is D .
• Question 259: One of the function of xylem is Options:
  A) strengthening the stem
  B) manufacturing food
  C) reducing loss of water
  D) conducting manufactured food
  E) storing unused sugar
  Show Answer
  The correct answer is A .
• Question 260: What is the function of Trichocyst in paramecium? Options:
  A) Movement
  B) Defence
  C) Excretion
  D) Reproduction
  Show Answer
  The correct answer is B .