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 271:

  

  Which of the labelled tissues in the figure above is responsible for transport of mineral salts and water in living plants?

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5
  Show Answer
  The correct answer is C .
• Question 272: In nature, plants and animals are perpetually engaged in mutualism because Options:
  A) they are rivals
  B) all animals rely on food produced by plants
  C) they utilize respiratory wastes of each other
  D) they are neighbours
  Show Answer
  The correct answer is B .
• Question 273:

  In the root vascular system, the stele is directly surrounded by the

  Options:
  A) pericycle
  B) cortex
  C) endodermis
  D) parenchyma
  Show Answer
  The correct answer is C .
• Question 274: Blood grouping in human beings is derived from combinations of Options:
  A) two different alleles
  B) four different alleles
  C) three different alleles
  D) two different genes
  Show Answer
  The correct answer is B .
• Question 275: Which of the following is the common to the mosquito, housefly and blackfly? Options:
  A) they undergo complete metamorphosis
  B) they are parasites of man
  C) their immature stages are aquatic
  D) their adults have two pairs of wings
  Show Answer
  The correct answer is A .
• Question 276: Which of the following statement is NOT true of enzymes? They Options:
  A) Are proteins
  B) Need cofactors to activate them
  C) Are sensitive in their action
  D) Are specific in their action
  E) Can withstand high temperature
  Show Answer
  The correct answer is E .
• Question 277: The following are example of morphological variation except Options:
  A) size
  B) ability to taste PTC
  C) color
  D) fingerprint
  Show Answer
  The correct answer is B .
• Question 278:

  

  Use the diagram above to answer this question.

  Which of the organisms represented are notable agricultural pests?

  Options:
  A) ll and IV
  B) l and IV
  C) ll and lll
  D) l and lll
  Show Answer
  The correct answer is B .
• Question 279: One common characteristic of fungi, algae, mosses and ferns is that they Options:
  A) show alternation of generations
  B) reproduce sexually by conjugation
  C) produce spores that are dispersed
  D) possess chlorophyll in their tissues
  Show Answer
  The correct answer is C .
• Question 280: Which of the following is INCORRECT? The prothallus of a fern Options:
  A) Is flattened heart-shaped structure
  B) Is green because its cells contain chloroplasts
  C) Is the dominant plant
  D) Bears the sexual organ
  E) Is attached to the ground by numerous rizoids
  Show Answer
  The correct answer is C .