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 921: Which of the following relationship involves only one organism? Options:
  A) Saprophytism
  B) commensalism
  C) Parasitism
  D) Symbiosis
  Show Answer
  The correct answer is A .
• Question 922:

  Ozone hole refers to

  Options:
  A) hole in ozone layer
  B) decrease in the ozone layer in troposphere
  C) decrease in thickness of ozone layer in stratosphere
  D) increase in the thickness of ozone layer in troposphere
  Show Answer
  The correct answer is C .
• Question 923: Which of the following is a sex-linked character? Options:
  A) Sickle-cell anaemia
  B) Tongue rollling
  C) Skin colour
  D) Colour blindness
  Show Answer
  The correct answer is D .
• Question 924:

  Which of the following is a characteristic of cells related to irritability?

  Options:
  A) Ability to respond to stimuli
  B) Ability to synthesize proteins
  C) Ability to generate energy
  D) Ability to replicate DNA
  Show Answer
  The correct answer is A .
• Question 925: A collection of population of all living organisms that exist in a habitat is referred to as Options:
  A) niche
  B) ecosystem
  C) community
  D) environment
  Show Answer
  The correct answer is C .
• Question 926: Which of the following lists of diseases, their causes and transmission is CORRECT? Options:
  A) Cholera, virus, severe diarrhoea, infected water
  B) Malaria, protozoan, high fever, contact with infected person
  C) Syphilis, virus, veneral disease, sexual intercourse
  D) small pox, virus, skin with blister, close contact with infected person
  E) Sleeping sickness, bacteria, tiredness, headache and dozing, tsetsefly bite
  Show Answer
  The correct answer is D .
• Question 927: Which of the following statements about the rate of transpiration is INCORRECT? It is Options:
  A) Dependent on temperature
  B) Affected by changes in light intensity
  C) Unaffected by humidity
  D) Dependent on air movement
  E) Affected by availability of water
  Show Answer
  The correct answer is C .
• Question 928: Which one of the following statements about the mammalian kidney is false? Options:
  A) The glomerulus is formed by a branch of the renal artery
  B) The glomerulus is a part of uniferous tubules
  C) Tha bowmans capsule is in the cortex of the kidney
  D) The uniferous tubules are richly supplied with blood vessels
  E) The glomerulusis lodged in the bowmans capsule
  Show Answer
  The correct answer is B .
• Question 929: A physiological adaptation of plants to the problem of excessive water loss is Options:
  A) reduction in the number of stomata
  B) reversal of the normal stomatal rythm
  C) possession of shallow roots
  D) ppossession of waxy curticle
  Show Answer
  The correct answer is B .
• Question 930: The lowest unit of classification is the Options:
  A) class
  B) genus
  C) phylum
  D) species
  Show Answer
  The correct answer is D .