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 1711: The bacteria that is found in the root nodules of leguminous plants is Options:
  A) clostridium
  B) rhizobium
  C) nostoc
  D) azotobacter
  Show Answer
  The correct answer is B .
• Question 1712:

  An animal which is active during the day is known as a

  Options:
  A) nocturnal animal
  B) diurnal animal
  C) terrestrial animal
  D) homortacmic animal
  Show Answer
  The correct answer is B .
• Question 1713: Physiological adaptation to very dry condition in animals is called Options:
  A) hibernation
  B) aestivation
  C) rejuvenation
  D) xeromorphism
  Show Answer
  The correct answer is B .
• Question 1714: Which of the following protects the essential parts of the flower at bud stage? Options:
  A) Stamens
  B) Sepals
  C) Petals
  D) Carpels
  Show Answer
  The correct answer is B .
• Question 1715: One of the features which adapts Paramecium to its environment is the possession of Options:
  A) a regular shape
  B) two nuclei
  C) cilia
  D) a pellicle
  Show Answer
  The correct answer is C .
• Question 1716:

  

  After 30 minutes, the level of sugar solution in the above figure will

  Options:
  A) rise in x only
  B) rise in Y only
  C) be the same in X and Y
  D) fall in Y
  Show Answer
  The correct answer is B .
• Question 1717: A circulatory system that does not allow mixing of oxygenated and de-oxygenated blood in mammalian heart is referred to as Options:
  A) open
  B) haemocoelic
  C) single
  D) closed
  Show Answer
  The correct answer is D .
• Question 1718: The nitrifying bacteria, Nitrosomonas, convert ammonia to Options:
  A) nitirites
  B) nitric acid
  C) niitrates
  D) nitrous oxide
  Show Answer
  The correct answer is A .
• Question 1719:

  

  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 1720:

  Trees in Savanna habitats usually have thick bark which mainly.

  Options:
  A) Reduces the rate of transpiration
  B) Protect them from scorching sun
  C) Protect them from heavy winds
  D) Resist bush fires
  Show Answer
  The correct answer is A .