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 2141: The nitrogenous substance that is excreted by birds in order to conserve water is Options:
  A) ammonia
  B) urea
  C) uric acid
  D) nitric acid
  Show Answer
  The correct answer is C .
• Question 2142: The following are examples of air borne diseases, except Options:
  A) Chicken pox
  B) Cholera
  C) common cold
  D) Whooping cough
  Show Answer
  The correct answer is B .
• Question 2143: The skin, through the sweat glands, function as Options:
  A) an excretory organ
  B) a respiratory organ
  C) a sensory organ
  D) a protective organ
  Show Answer
  The correct answer is A .
• Question 2144: One of the characteristics of plants in the savanna is the Options:
  A) possession of thin, smoth barks
  B) possession of large tap root
  C) production of seedlings on mother plant
  D) possession of thick, flaky bark
  Show Answer
  The correct answer is D .
• Question 2145: Fibrinogen and prothrombin play important roles in the Options:
  A) deamination of proteins
  B) clotting of blood
  C) detoxication of substances
  D) storage of vitamins
  Show Answer
  The correct answer is B .
• Question 2146: Which of the following ecological factors are common to both terrestrial and aquatic habitats? Options:
  A) Rainfall, temperature and light
  B) Salinity, rainfall and altitude
  C) Tides, wind, rainfall and altitude
  D) pH, salinity, rainfall and humidity.
  Show Answer
  The correct answer is A .
• Question 2147:
  

  From the diagram above, the structure labelled I is the

  Options:
  A) incus
  B) malleus
  C) hammer
  D) stapes
  Show Answer
  The correct answer is D .
• Question 2148: In the mammal, the autonomic nervous system consists of Options:
  A) sympathetic and parasympathetic system
  B) brain and spinal nerves
  C) brain and cranial nerves
  D) spinal cord and spinal nerves
  Show Answer
  The correct answer is A .
• Question 2149: The very bright colours in some types of mushroom Options:
  A) are warning that they may be poisonous
  B) indicate they are very taste
  C) attract potential transporters of the spores
  D) perform the same function as bright colours in flowers
  Show Answer
  The correct answer is A .
• Question 2150: Stomatal pores open when there is Options:
  A) an increase in the sugar content of guard cells
  B) a decreases in the osmotic concentration of the guard cell
  C) a decrease in the sugar content of mesophyll cells
  D) an increase in the sugar content of mesophyll cells
  Show Answer
  The correct answer is A .