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 401: When a short-sighted person views a distant object without spectacles, the image is formed Options:
  A) on the retina
  B) in front of the retina
  C) behind the retina
  D) on the blind spot
  Show Answer
  The correct answer is B .
• Question 402: Nitrogen is released into the atmosphere when ________ Options:
  A) plants absorbs mineral salt
  B) sugar is completely broken down
  C) through plant uptake
  D) when lightning strike
  Show Answer
  The correct answer is D .
• Question 403: Scales on reptiles are a feature for Options:
  A) conserving water
  B) conserving food
  C) protecting the skin
  D) locomotion
  Show Answer
  The correct answer is A .
• Question 404: One of the function of xylem is Options:
  A) strengthening the stem
  B) manufacturing food
  C) reducing loss of water
  D) conducting manufactured food
  E) storing unused sugar
  Show Answer
  The correct answer is A .
• Question 405: Malaria symptoms are caused by Options:
  A) toxins released into the blood as a result of the destruction of red blood cell
  B) the multiplication of the malaria sporozites in the liver
  C) the invasion of the red blood cells by the trophozoites
  D) the development of merozoites into gametocytes
  Show Answer
  The correct answer is B .
• Question 406:

  The number of times an organism occurs within a given area of a habitat is referred to as

  Options:
  A) Population growth rate
  B) Population frequency
  C) Population growth rate
  D) Population density
  Show Answer
  The correct answer is B .
• Question 407: Alternation of asexual modes of reproduction is found in Options:
  A) blue,green algae
  B) euglena
  C) fern
  D) maize
  Show Answer
  The correct answer is C .
• Question 408: The richest source of vitamin A are Options:
  A) palm oil and groundnut oil
  B) palm oil and carrot
  C) rice and groundnut oil
  D) oranges and carrot
  Show Answer
  The correct answer is B .
• Question 409:

  The blood vessel which carries blood from the alimentary canal to the liver is the?

  Options:
  A) hepatic artery
  B) hepatic vein
  C) hepatic portal vein
  D) mesenteric artery
  Show Answer
  The correct answer is C .
• Question 410:

  

  In the diagram, the part labelled I represents the

  Options:
  A) base pairs
  B) ribose sugar
  C) phosphate linkage
  D) deoxyri-bose sugar
  Show Answer
  The correct answer is A .