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 1:

  

  The type of vegetative reproduction illustrated in the diagram above is

  Options:
  A) grafting
  B) adventitious bud
  C) sucker
  D) aerial layering
  Show Answer
  The correct answer is B .
• Question 2: Which of the following scenarios is an example of cohesion? Options:
  A) Water molecules stick to the surface of a mirror.
  B) Water sticks to the walls of blood vessels.
  C) Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle.
  D) Water molecules stick to one another and form a bead
  Show Answer
  The correct answer is D .
• Question 3: When an ovary is placed on the receptacle above the other floral parts it is referred to as Options:
  A) half inferior ovary
  B) superior ovary
  C) inferior ovary
  D) half superior ovary
  Show Answer
  The correct answer is B .
• Question 4: The heart of the adult frog consist of Options:
  A) two auricles and two ventricles
  B) one auricle and one ventricle
  C) two ventricle and one auricle
  D) one ventricle and two auricles
  Show Answer
  The correct answer is D .
• Question 5: The vitamin which is important in the formation of the retina pigment is Options:
  A) vitamin A
  B) vitamin B
  C) vitamin C
  D) vitamin D
  Show Answer
  The correct answer is A .
• Question 6: The natural process that produces adaptive evolutionary changes is Options:
  A) Mutation
  B) Gene flow
  C) Genetic drift
  D) Natural selection
  Show Answer
  The correct answer is D .
• Question 7:

  

  Which of the following results is to be expected if the set up is left for several hours?

  Options:
  A) decrease in the size of the yam
  B) movement of the salt solution into the water
  C) decrease in the volume of water inside the yam
  D) movement of water from the salt solution into the yam
  Show Answer
  The correct answer is C .
• Question 8:

  When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be

  Options:
  A) isotonic
  B) dilute
  C) hypotonic
  D) hypertonic
  Show Answer
  The correct answer is C .
• Question 9: Which of the following is true of climax community? Options:
  A) it persists until the enviroment or climate changes
  B) it changes drastically from one year to the next
  C) it is first stage in succession
  D) It is made up of the tallest trees and the smallest
  Show Answer
  The correct answer is A .
• Question 10: Which of the following is lacking in the diet of a person with kwashiorkor? Options:
  A) proteins
  B) carbohydrates
  C) minerals
  D) vitamins
  Show Answer
  The correct answer is A .