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 601:

  

  The structure labelled I is the

  Options:
  A) Golgi body
  B) mitochondrion
  C) endoplasmic reticulum
  D) vacuole
  Show Answer
  The correct answer is C .
• Question 602: Insects that goes through adult stage without becoming pupa are except ________ Options:
  A) crickets
  B) cockroach
  C) grasshopper
  D) bees
  Show Answer
  The correct answer is D .
• Question 603: How does an enzyme affect the rate of a reaction? Options:
  A) It lowers the activation energy of the reaction, increasing the reaction rate.
  B) It raises the activation energy of the reaction, decreasing the reaction rate.
  C) It lowers the activation energy of the reaction, decreasing the reaction rate.
  D) It raises the activation energy of the reaction, increasing the reaction rate.
  Show Answer
  The correct answer is A .
• Question 604:

  

  The bone labelled X in the figure above is the

  Options:
  A) ulna
  B) fibula
  C) radius
  D) humerus
  E) tibia
  Show Answer
  The correct answer is D .
• Question 605: A limited factor in a plant population near a chemical factory is likely to be Options:
  A) Light
  B) Humidity
  C) wind
  D) pH
  Show Answer
  The correct answer is D .
• Question 606:

  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 607: People wit sickle-cell anaemia have haemoglobin Options:
  A) S and are homozygous recessive
  B) A and are heterozygous recessive
  C) S and are heterozygous recessive
  D) A and are homozygous recessive
  Show Answer
  The correct answer is A .
• Question 608: A yellow maize is crossed with a white maize and the first filial generation produce yellow maize only. The white trait is said to exhibit Options:
  A) dominance
  B) recessiveness
  C) codominance
  D) incomplete dominance
  Show Answer
  The correct answer is B .
• Question 609: What organelle is the site of photosynthesis in plants? Options:
  A) Chloroplasts
  B) Ribosomes
  C) Cytoplasm
  D) Mitochondria
  Show Answer
  The correct answer is A .
• Question 610: One of the most effective ways of controlling guinea worm is by Options:
  A) treating the disease
  B) public enlightenment campaigns
  C) accelerating rural developmnet
  D) provision of portable drinking water
  Show Answer
  The correct answer is D .