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: In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result? Options:
  A) mercurous nitrate
  B) copper sulphate
  C) sodium carbonate
  D) silver nitrate
  Show Answer
  The correct answer is B .
• Question 402: Which of the following is one of Lamarck's theories? Options:
  A) Some variations are more favourable to existence in a given environment than others
  B) All living organisms are constantly involved in a struggle to existence
  C) The size of a given population remains fairly constant
  D) New species originates through the inheritance of acquired traits
  Show Answer
  The correct answer is D .
• Question 403: The male cockroach differs from the female by having Options:
  A) mandibles
  B) a pair of style
  C) spiracles
  D) a pair of cerci
  Show Answer
  The correct answer is B .
• Question 404: A characteristics exhibited by all living organism is Options:
  A) sexual reproduction
  B) aerobic respiration
  C) the ability to move from one place to another
  D) the ability to move unwanted substances
  Show Answer
  The correct answer is A .
• Question 405: Which of the following is a sex-linked character? Options:
  A) Sickle-cell anaemia
  B) Tongue rollling
  C) Skin colour
  D) Colour blindness
  Show Answer
  The correct answer is D .
• Question 406: What is the level of organization of an onion bulb? Options:
  A) tissue
  B) organ
  C) systemic
  D) oranismal
  Show Answer
  The correct answer is B .
• Question 407: 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 .
• Question 408: The association in which one member benefits and the other is relatively unaffected by the interaction is termed Options:
  A) symbiosis
  B) parasitism
  C) commensalism
  D) mutualism
  Show Answer
  The correct answer is C .
• Question 409: 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 410:

  

  The main reservoir of water in the circle is the

  Options:
  A) cloud
  B) ground water
  C) plant
  D) ocean
  Show Answer
  The correct answer is D .