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 521: The light sensitive cells in the human eye is called the ................ Options:
  A) Choroid
  B) Sclerotic layer
  C) retina
  D) cones
  Show Answer
  The correct answer is D .
• Question 522:

  Which of the following statements about the heart is true?

  Options:
  A) The heart is responsible for the production of red blood cells
  B) The heart pumps oxygenated blood to the lungs
  C) The heart receives blood from the kidneys and filters waste products
  D) The heart is a muscular organ that contracts to circulate blood throughout the body
  Show Answer
  The correct answer is D .
• Question 523: A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is Options:
  A) 75%
  B) 50%
  C) 25%
  D) 100%
  Show Answer
  The correct answer is A .
• Question 524: The leech and the earthworm belong to the Options:
  A) mollusces
  B) crustaceans
  C) arachnides
  D) annelides
  Show Answer
  The correct answer is D .
• Question 525:

  Spirogyra reproduces vegetatively by

  Options:
  A) spore production
  B) fragmentation
  C) multiple fission
  D) budding
  E) binary fission
  Show Answer
  The correct answer is B .
• Question 526: Epiphytes growing on the branches of trees provide an example of the relationship known as Options:
  A) parasitism
  B) commensalism
  C) saprophytism
  D) holophytism
  Show Answer
  The correct answer is B .
• Question 527: The amount of water loss from a leaf can be detected using Options:
  A) lime-water
  B) red litmus paper
  C) blue litmus paper
  D) blue cobalt chloride paper
  E) pink cobalt chloride paper
  Show Answer
  The correct answer is D .
• Question 528: The part of the cell solely responsible for respiration is the Options:
  A) nucleus
  B) nucleolus
  C) mitochondria
  D) golgi apparatus
  E) endoplasmic reticulum
  Show Answer
  The correct answer is C .
• Question 529: 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 530: In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to Options:
  A) neutralize the acid in water
  B) supply mineral salt to water plant
  C) supply carbondioxide for photosynthesis
  D) kill micro-organisms in water
  Show Answer
  The correct answer is B .