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 201: What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically Options:
  A) 1/4
  B) 1/2
  C) 3/4
  D) 4/4
  Show Answer
  The correct answer is A .
• Question 202: Growth can best be determined in a population of Spirogyra by measuring the Options:
  A) total length of the filament
  B) total widths of the filaments
  C) rate of photosynthesis in the population
  D) dry weights of the organism
  Show Answer
  The correct answer is A .
• Question 203: If a woman's genotype is Tt Qq Rr, what would be the gene content of her eggs? Options:
  A) TQr, tqr
  B) TQR, tqr
  C) TqR, tQr
  D) tQr, TQR
  Show Answer
  The correct answer is B .
• Question 204: Which vitamin plays an important role in blood clotting? Options:
  A) vitamin A
  B) Vitamin K
  C) Vitamin B₁₂
  D) Vitamin C
  Show Answer
  The correct answer is B .
• Question 205: The inactive state exhibited by an animal during hot dry seasons is termed Options:
  A) Aestivation
  B) Dormancy
  C) Resting
  D) Hibernation
  Show Answer
  The correct answer is A .
• Question 206:

  

  The organism above is

  Options:
  A) chlamydomonas
  B) algae
  C) volvox
  D) euglena
  Show Answer
  The correct answer is C .
• Question 207: If the phloem of a healthy plant is killed by heat treatment the Options:
  A) the upward movement of salt will cease
  B) food manufactured in the leaves will accumulate
  C) whole plant will die immediately
  D) leaves of the plant will become yellow
  Show Answer
  The correct answer is B .
• Question 208: Physiological adaptation to very dry condition in animals is called Options:
  A) hibernation
  B) aestivation
  C) rejuvenation
  D) xeromorphism
  Show Answer
  The correct answer is B .
• Question 209: 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 210:

  Which of the following structures in the ear is responsible for transmitting sound vibrations to the auditory nerve?

  Options:
  A) Eardrum
  B) Ossicles
  C) Cochlea
  D) Auditory canal
  Show Answer
  The correct answer is C .