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 581: 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 .
• Question 582:

  

  The part labelled I and II constitute the

  Options:
  A) Crown
  B) neck
  C) root
  D) gum
  Show Answer
  The correct answer is A .
• Question 583:

  Use the list of ecological constituents below to answer the question below

  1. Mango 2. Spear grass 3. Goat 4. Sheep 5. Temperature 6. Beans 7. Rock 8. Water

  Items 1-4 can be regarded as

  Options:
  A) a population
  B) a community
  C) an ecosystem
  D) a niche
  Show Answer
  The correct answer is B .
• Question 584: The most important adaptation of xerophytes is the ability of the protoplasm to Options:
  A) resist being damaged by loss of water
  B) store sugar and minerals in the vacuoles
  C) absorbs water and swell
  D) shrink from the cell wall
  Show Answer
  The correct answer is A .
• Question 585:

  Only specially adapted micro-organisms are found in

  Options:
  A) Salty water
  B) Humid air
  C) Moist soil
  D) Mouth cavities
  Show Answer
  The correct answer is A .
• Question 586: 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 587: Which of the following statements about the dentition of man is INCORRECT ? man has Options:
  A) More molars than incisors
  B) No diastema
  C) The same number of teeth on upper and lower jaw
  D) A total of thirty-two teeth
  E) A total of six molars
  Show Answer
  The correct answer is E .
• Question 588:

  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 589: Unlike auxins, gibberellins Options:
  A) induces the formation of adventitious roots
  B) do not affect leaf and fruit abscission
  C) cannot stimulate stem elongation
  D) are quite effective as herbicides
  Show Answer
  The correct answer is B .
• Question 590:

  In genetic counseling, a man with hemoglobin formation HbAHbS is most preferred to marry a woman of?

  Options:
  A) HbA HbA
  B) HbC HbH
  C) HbM HbF
  D) HbS HbS
  Show Answer
  The correct answer is A .