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 491: The respiratory organ in the land snail is the Options:
  A) radula
  B) mantle
  C) tentacle
  D) foot
  Show Answer
  The correct answer is D .
• Question 492: One advantage of variation in a species population is that individuals Options:
  A) with favoured traits become dominant
  B) easily reach their reproductive age
  C) are easily recognised by mates
  D) are better adapted to changes
  Show Answer
  The correct answer is A .
• Question 493: Which of the following structures is common to Euglena, white blood cell and Amoeba? Options:
  A) Vacuole
  B) Cell wall
  C) Cilia
  D) Cell membrane
  Show Answer
  The correct answer is D .
• Question 494: The organisms with the least number of individuals in a pyramid of numbers are the Options:
  A) secondary consumers
  B) tertiary consumers
  C) primary producers
  D) primary consumers
  Show Answer
  The correct answer is B .
• Question 495: The mammalian pancreas is involved with the Options:
  A) digestion of food only
  B) digestion and absorption of food
  C) digestion of food and regulation of blood sugar
  D) digestion of food, production of hormone and the regulation of blood
  E) digestion of food, and the regulation of blood
  Show Answer
  The correct answer is D .
• Question 496: The essential structural difference between hydra and tapeworm is that while Hydra Options:
  A) has tentacles, tapeworm is parasitic
  B) is diploblastic, tapeworm is triplobastic
  C) has a mouth, tapeworm feeds by suckers
  D) has mesoderm, tapeworm has mesogloea
  Show Answer
  The correct answer is B .
• Question 497: The ratio of carriers to sicklers in the F₁ generation derived from a parental cross of two carriers of haemoglobin S gene is Options:
  A) 3 : 1
  B) 1 : 3
  C) 2 : 1
  D) 1 : 2
  Show Answer
  The correct answer is C .
• Question 498:

  Which of the following eye defects is caused by the inability of the eye to focus light on the retina?

  Options:
  A) Glaucoma
  B) Myopia
  C) Cataracts
  D) Astigmatism
  Show Answer
  The correct answer is B .
• Question 499: If the offspring of a cross between a brown mouse (bb) and a black mouse (BB) are allowed to interbreed, how many different genotypes would result? Options:
  A) 2
  B) 3
  C) 4
  D) 5
  Show Answer
  The correct answer is C .
• Question 500: Viruses are regarded as non-living because they Options:
  A) can niether reproduce asexually nor sexually
  B) cannot survive in their respective enviroments
  C) do not possess characteristics that can be transmitted from one generation to the next
  D) can neither respire nor excrete
  Show Answer
  The correct answer is D .