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 1141: In the gene locus for eye colour in humans, the allele for brown eye is dominant over the allele for blue eyes. If a homozygous brown-eyed girl has a brother with blue eyes, what are the likely phenotypes of there parents'eye colour (Eye colour is not a sex linked trait) Options:
  A) Both parents have blue eyes
  B) Their father has blue eyes and their mother has brown eyes
  C) both parents have brown eyes
  D) Their mother has the blue eyes and their father has the brown eyes
  Show Answer
  The correct answer is C .
• Question 1142: Which of the following is NOT regarded as a pollutant on land or in the air? Options:
  A) smoke
  B) noise
  C) sulphur (IV) oxide
  D) carbon monoxide
  E) nitrogen
  Show Answer
  The correct answer is E .
• Question 1143:

  In the enzyme (amlyase) reactions of starch → sugar

  Starch is referred to as the

  Options:
  A) substrate
  B) product
  C) enzyme
  D) enzyme-substrate complex
  E) reaction mixture
  Show Answer
  The correct answer is A .
• Question 1144:

  

  In the diagram, the species whose distribution is not affected by rainfall is

  Options:
  A) ii
  B) iv
  C) i
  D) iii
  Show Answer
  The correct answer is A .
• Question 1145: Climax communities in a biotic succession are usually characterized by Options:
  A) a constant change in the appearance of the communities
  B) different species that are constantly changing
  C) a stable composition of plant and animal species
  D) rapid changes in the plant and animal species
  Show Answer
  The correct answer is C .
• Question 1146: During ovulation, an egg is released from the Options:
  A) corpus luteum
  B) ovarian funnel
  C) graafian follicle
  D) fallopian tube
  Show Answer
  The correct answer is C .
• Question 1147: The body of a snail is divided into head Options:
  A) thorax and abdomen
  B) visceral mass and abdomen
  C) thorax and foot
  D) visceral mass and foot
  Show Answer
  The correct answer is D .
• Question 1148: Agglutination is the _______ of the ________ Options:
  A) coagulation, white bloodcell
  B) coagulation, water
  C) white blood cells, red blood cell
  D) coagulation, red blood cell
  Show Answer
  The correct answer is D .
• Question 1149: The theory of survival of the fittest was propounded by Options:
  A) Darwin
  B) Lamarck
  C) Linnaeus
  D) Mendel
  Show Answer
  The correct answer is A .
• Question 1150: The feature that links birds to reptiles in evolution is the possession of Options:
  A) feathers
  B) break
  C) skeleton
  D) scales
  Show Answer
  The correct answer is D .