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 471: Which of the following is not part of the mammalian male reproductive organ? Options:
  A) Epididymis
  B) Vas deferens
  C) testis
  D) Vulva
  Show Answer
  The correct answer is D .
• Question 472:

  The movement of sugars from the leaf to other parts of plant is?

  Options:
  A) guttation
  B) transpiration
  C) transportation
  D) translocation
  Show Answer
  The correct answer is D .
• Question 473:

  If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is

  Options:
  A) $\frac{1}{2}$
  B) $\frac{3}{4}$
  C) $\frac{1}{4}$
  D) $1$
  Show Answer
  The correct answer is C .
• Question 474:

  

  Which of the labelled parts of the cell contains ribonucleic acid?

  Options:
  A) 1
  B) 2
  C) 3
  D) 5
  Show Answer
  The correct answer is C .
• Question 475: Which of the following instruments is used to demonstrate the response of roots and shoots to gravity? Options:
  A) Klinostat
  B) Manometer
  C) Porometer
  D) Potometer
  E) Photometer
  Show Answer
  The correct answer is A .
• Question 476: Which scenario would cause a covalent bond to form? Options:
  A) Two atoms share electrons so they can fill their outer shells
  B) The constant motion of electrons and the creation of charge imbalances bonds two molecules together
  C) A hydrogen atom with a slight positive charge is attracted to a negative charge of another molecule or atom
  D) One atom loses one or more electrons and the other atom gains one or more electrons
  Show Answer
  The correct answer is A .
• Question 477:

  In an ecosystem, the organism which changes light energy into stored chemical energy is the

  Options:
  A) Consumer
  B) Producer
  C) Decomposer
  D) Carnivore
  Show Answer
  The correct answer is B .
• Question 478:

  What is the term used to describe the maximum number of individuals of a species that an environment can support indefinitely?

  Options:
  A) Ecological niche
  B) Limiting factor
  C) Carrying capacity
  D) Density-dependent factor
  Show Answer
  The correct answer is C .
• Question 479: Fibrinogen and prothrombin play important roles in the Options:
  A) deamination of proteins
  B) clotting of blood
  C) detoxication of substances
  D) storage of vitamins
  Show Answer
  The correct answer is B .
• Question 480:

  Which of the following is an example of physiological variation in organisms?

  Options:
  A) Variation in blood pressure among individuals
  B) Variation in beak shape among finches
  C) Differences in fur color in rabbits
  D) Variation in leaf shape in plants
  Show Answer
  The correct answer is A .