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 population density of Tridex in an abandoned square farm land of side 200 m was found to be 5 plants per m². The population size of the plant on the farm is Options:
  A) 40
  B) 1000
  C) 40000
  D) 200000
  Show Answer
  The correct answer is D .
• Question 2: Which of the following substance is not found in urine? Options:
  A) Water
  B) Sodium chloride
  C) Nitrogenous compounds
  D) Calcium chloride
  E) Nitrogenous salts
  Show Answer
  The correct answer is D .
• Question 3: Deoxygenation blood flows into the right and left lungs through the Options:
  A) pulmonary vein
  B) vena cava
  C) pulmonary artery
  D) subclavian vein
  Show Answer
  The correct answer is C .
• Question 4: The main structure in vertebrates that supports and protects the body is the Options:
  A) skeleton
  B) ligament
  C) muscle
  D) joint
  Show Answer
  The correct answer is A .
• Question 5: The formation of water in the tissue respiration results from the Options:
  A) breakdown of water molecules
  B) reduction of oxygen by hydrogen
  C) reduction of carbon(IV) oxide
  D) combination of water molecules
  Show Answer
  The correct answer is B .
• Question 6:

  

  In the diagram, The economic importance of the larva is that it

  Options:
  A) is eaten by birds
  B) develop into a moth
  C) resembles the plant on which it lives
  D) feeds on the leaves of crops
  Show Answer
  The correct answer is D .
• Question 7:

  

  After circulation in the lungs, the blood returns to the left auricle through

  Options:
  A) 1
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is D .
• Question 8: The lungs of the lung fish is an adaptation for respiration _______? Options:
  A) to complement gills while in water
  B) to complement gills while on land
  C) while on land
  D) while in water
  Show Answer
  The correct answer is D .
• Question 9: The similarity among organisms belonging to the same group will be least within each Options:
  A) family
  B) order
  C) kingdom
  D) species
  Show Answer
  The correct answer is C .
• Question 10: Th chitin in the exoskeleton of many arthropods is strengthened by Options:
  A) calcium compounds
  B) organic salts
  C) lipids
  D) proteins
  Show Answer
  The correct answer is A .