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 341: The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as Options:
  A) predation
  B) commensalism
  C) parasitism
  D) competition
  Show Answer
  The correct answer is B .
• Question 342:

  

  The structure labelled 1 is the

  Options:
  A) plumule
  B) radicle
  C) cell membrane
  D) seed coat
  Show Answer
  The correct answer is D .
• Question 343: The easiest way to establish the level of pollution in a local stream is to measure the level of Options:
  A) oxygen
  B) carbon (IV) oxide
  C) ammonia
  D) alkalinity
  Show Answer
  The correct answer is A .
• Question 344: Breathing root is an adaptation for survival in the Options:
  A) mangrove swamp
  B) desert
  C) arboreal habitat
  D) savanna
  Show Answer
  The correct answer is A .
• Question 345: A function of the hydrochloric acid produced in the human stomach during digestion is to Options:
  A) neutralise the effect of bile
  B) coagulate milk protein and emulsify fats
  C) stop the action of ptyalin
  D) break up food into smaller particles
  Show Answer
  The correct answer is C .
• Question 346: The pedipalpi in spiders are used for Options:
  A) grasping
  B) walking
  C) feeling
  D) web spinning
  Show Answer
  The correct answer is A .
• Question 347: The presence of endoskeleton is characteristic of Options:
  A) invertebrata
  B) vertebrata
  C) insecta
  D) coelenterata
  Show Answer
  The correct answer is B .
• Question 348:

  

  The aim of the experiment is to demonstrate

  Options:
  A) that in mammal gaseous exchange takes place in the lungs
  B) the part played by the pleural cavity and diaphragm in respiration
  C) that a large amount of oxygen is absorbed by the lungs
  D) the presence of carbon (IV) oxide in the exhaled air
  Show Answer
  The correct answer is B .
• Question 349: The causative agent of Poliomyelitis is Options:
  A) Virus
  B) Fungus
  C) Protozoan
  D) Bacterium
  Show Answer
  The correct answer is A .
• Question 350: A density-dependent factor that regulates the population size of organism is Options:
  A) Disease
  B) Sudden flood
  C) Drought
  D) Fire outbreak
  Show Answer
  The correct answer is A .