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 711: One common feature of the fungi, algae, mosses and ferns is that they Options:
  A) are photosynthetic
  B) show alternation of generation
  C) reproduce by means of conjugation
  D) can survive dry conditions
  E) have no seeds
  Show Answer
  The correct answer is E .
• Question 712:

  

  Use the diagram above to answer this question.

  The function of the structure labelled l is to

  Options:
  A) stimulate the development of secondary sexual characters
  B) prepare the body for any emergency
  C) maintain proper glucose concentration in the blood
  D) regulate the activities of other endocrine glands
  Show Answer
  The correct answer is D .
• Question 713: The gill rakers of fishes take part in Options:
  A) feeding
  B) respiration
  C) swimming
  D) diffusion
  Show Answer
  The correct answer is A .
• Question 714:

  Which of the following statements about the heart is true?

  Options:
  A) The heart is responsible for the production of red blood cells
  B) The heart pumps oxygenated blood to the lungs
  C) The heart receives blood from the kidneys and filters waste products
  D) The heart is a muscular organ that contracts to circulate blood throughout the body
  Show Answer
  The correct answer is D .
• Question 715: Which of the following is the direct consequence of transferring energy from one trophic level to another? Options:
  A) An increase in biomass
  B) A decrease in the efficiency
  C) An increase in the total numbers of resulting individuals
  D) A decrease in the resulting biomass
  Show Answer
  The correct answer is D .
• Question 716: In vascular plants, the sieve tubes and companion cells are present in the Options:
  A) cambium
  B) cortex
  C) xylem
  D) phloem
  Show Answer
  The correct answer is D .
• Question 717:

  I. High birth rate and high immigration rate

  II. Low birth rate and high immigration rate

  III. Low mortality rate and low emigration rate

  IV. High mortality rate and high emigration rate.

  Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements?

  Options:
  A) II and III
  B) I and III
  C) I and IV
  D) I and II
  Show Answer
  The correct answer is B .
• Question 718:

  Sources of air pollutants are

  Options:
  A) industrial chimneys, burning fossil oils and river dams
  B) sulphurdioxide, acid rain and pesticides
  C) sulphur dioxide, vehicle exhausts, and aerosols
  D) sewage,smoke and old vehicles
  Show Answer
  The correct answer is C .
• Question 719:

  

  Primary consumers are found in

  Options:
  A) 1, 2 and 3
  B) 1, 3 and 7
  C) 2, 3 and 7
  D) 2, 4 and 5
  Show Answer
  The correct answer is C .
• Question 720: The number of plants species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomea spp (5), sida spp (7) and Imperata spp (23). What is the percentage of occurrence of Imperata spp? Options:
  A) 35%
  B) 16%
  C) 46%
  D) 23%
  Show Answer
  The correct answer is C .