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: Heat produced in tissue respiration in plants is Options:
  A) a chemical form of energy
  B) the only form of energy
  C) the main form of energy
  D) a useful form of energy
  E) a waste form of energy
  Show Answer
  The correct answer is A .
• Question 252: The sex of a foetus is determined during Options:
  A) meiosis
  B) copulation
  C) fertilization
  D) placentation
  Show Answer
  The correct answer is C .
• Question 253: Insects and millipede have many features in common EXCEPT Options:
  A) exoskeleton
  B) jointed appendages
  C) compound eyes
  D) segmented body
  Show Answer
  The correct answer is C .
• Question 254: The type of reproduction that is common to both Hydra and yeast Options:
  A) conjugation
  B) binary fission
  C) grafting
  D) budding
  Show Answer
  The correct answer is D .
• Question 255: Short-sightedness can be corrected by lenses which are Options:
  A) convex
  B) biconvex
  C) plano-convex
  D) concave
  Show Answer
  The correct answer is D .
• Question 256: Lack of space in a population could lead to an increase in Options:
  A) water scarcity
  B) birth rate
  C) disease rate
  D) dought
  Show Answer
  The correct answer is C .
• Question 257: If you cross breed a tall variety (Tt) of maize with a short variety (tt), the ratio of tall to short plants in the offspring will be Options:
  A) 2:1
  B) 1:2
  C) 1:1
  D) 1:3
  E) 3:1
  Show Answer
  The correct answer is C .
• Question 258: Which of the following types of vertebrae occur in equal numbers in the rabbit, rat and man? Options:
  A) Caudal
  B) Thoracic
  C) Lumber
  D) Cervical
  E) Sacral
  Show Answer
  The correct answer is D .
• Question 259:

  Which of the following statements best describes the role of competition in the process of adaptation?

  Options:
  A) Competition leads to the selection of individuals with favorable traits for survival and reproduction
  B) Competition ensures equal distribution of resources among individuals in a population
  C) Competition leads to the development of new traits and adaptations in a population
  D) Competition reduces the need for adaptations as individuals coexist peacefully
  Show Answer
  The correct answer is A .
• Question 260: When spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it Options:
  A) Remains unchanged
  B) Takes up water an burst
  C) Absorbs a little water
  D) Loses water and shrivels
  E) Becomes turgid
  Show Answer
  The correct answer is D .