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 871:

  Which of the following options best describes adaptation for survival in organisms?

  Options:
  A) Adaptation is the inherited trait that increases an organism's chances of survival and reproduction in its environment
  B) Adaptation is the process by which organisms acquire new characteristics during their lifetime
  C) Adaptation refers to the ability of an organism to change its environment to better suit its needs
  D) Adaptation involves the development of new traits in response to changes in the environment
  Show Answer
  The correct answer is A .
• Question 872: The least evidence in support of the theory of evolution is provided by the study of Options:
  A) anatomy
  B) ecology
  C) geology
  D) embryology
  Show Answer
  The correct answer is B .
• Question 873:

  The type of nutrition shown by spirogyra is

  Options:
  A) Symbiosis
  B) Holozoic
  C) Chemosynthetic
  D) Holophytic
  Show Answer
  The correct answer is D .
• Question 874: The activity of ptyalin is likely to decrease with an increase in the concentration of Options:
  A) oxygen
  B) starch
  C) protein
  D) acid
  Show Answer
  The correct answer is D .
• Question 875:

  

  Why is the part labelled 5 thicker than 6?

  Options:
  A) 5 is the left ventricle and 6 the right ventricle
  B) 6 is the left ventricle and 5 the right ventricle
  C) 5 receives blood from the left auricle and 6 from the right
  D) 5 pumps blood round the body and 6 pumps blood into the lungs
  E) 5 deals with oxygenated blood and 6 deals with deoxygenated blood
  Show Answer
  The correct answer is D .
• Question 876: The structure that is most commonly identified in all living cells under the light microscope is the Options:
  A) mitochondrion
  B) chloroplast
  C) nucleus
  D) ribosome
  Show Answer
  The correct answer is C .
• Question 877: Tissue respiration is important for the Options:
  A) absorption of oxygen into the alveoli
  B) release of carbon (IV) oxide into the lungs
  C) release of energy for the body use
  D) exhalation of carbon(IV) oxide from the lungs
  Show Answer
  The correct answer is C .
• Question 878: The mammalian organ which acts both as a digestive and as an endocrine organ is the Options:
  A) oesophagus
  B) liver
  C) pancreas
  D) spleen
  Show Answer
  The correct answer is C .
• Question 879:

  Total salt content in blood is about

  Options:
  A) 1.85 to 1.9%
  B) 11.85 to 11.9%
  C) 2.85 to 2.9%
  D) 0.85 to 0.9%
  Show Answer
  The correct answer is D .
• Question 880: In rabbit the chamber of the heart that receives oxygenated blood from the lungs is the Options:
  A) left ventrictle
  B) left auricle
  C) right ventricle
  D) right auricle
  Show Answer
  The correct answer is B .