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 1281:

  Which of the following is a behavioural adaptation that protects prey from predators?

  Options:
  A) Hibernation
  B) Shedding of leaves
  C) Secreting irritating fluid
  D) Dormancy
  Show Answer
  The correct answer is C .
• Question 1282: An acidic soil can be improved upon by Options:
  A) sedimentation
  B) leaching
  C) flocculation
  D) watering
  Show Answer
  The correct answer is C .
• Question 1283:

  

  The part labelled J is called

  Options:
  A) porosimeter
  B) potometer
  C) manometer
  D) auxanometer
  Show Answer
  The correct answer is C .
• Question 1284: Adaptive features of plants to desert conditions include Options:
  A) thick barks, succulent stems and sunken stomata
  B) thin barks, succulent stems and sunken stomata
  C) thin barks, air floats on stems and sunken stomata
  D) air spaces in tissues, adventitious roots and thick barks
  Show Answer
  The correct answer is A .
• Question 1285: A health condition that is known to have resulted from gene mutation is Options:
  A) haemophilia
  B) colour blindness
  C) sickle-cell anaemia
  D) anaemia
  Show Answer
  The correct answer is C .
• Question 1286:

  Which of the following is an evolutionary trend commonly observed in organisms?

  Options:
  A) Decreased complexity over time
  B) Increased dependence on external resources
  C) Increased genetic diversity within populations
  D) Decreased adaptation to the environment
  Show Answer
  The correct answer is C .
• Question 1287: In a mammal, the placenta performs functions similar to those to the Options:
  A) lungs kidneys and digestive system
  B) lungs, heart and nervous system
  C) liver, intestines and reproductive system
  D) intestine, heart and digestive system
  Show Answer
  The correct answer is A .
• Question 1288: Euglena may be classified as a plant because it Options:
  A) has chloroplast
  B) has a gullet
  C) lives in a pond
  D) possesses a flagellum
  E) has pellicle
  Show Answer
  The correct answer is A .
• Question 1289:

  Ecological succession refers to

  Options:
  A) The movement of organisms from one habitat to another
  B) The competition among species for limited resources
  C) The process of natural selection in a population
  D) The gradual and predictable change in a community over time
  Show Answer
  The correct answer is D .
• Question 1290: A potometer is used to determine the rate at which a shoot Options:
  A) respires
  B) sucks air bubbles
  C) loses weight
  D) absorbs water
  E) transpires
  Show Answer
  The correct answer is E .