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 641: A severe deficiency of thyroxin results in Options:
  A) diabetes mellitus
  B) sexual underdevelopment
  C) cretinism
  D) gigantism
  Show Answer
  The correct answer is C .
• Question 642: The process by which a red blood cell placed in distilled water absorbs water until it burst and releases its contents into the surrounding is known as Options:
  A) osmosis
  B) plasmolysis
  C) turgidity
  D) haemolysis
  Show Answer
  The correct answer is D .
• Question 643:

  Which organ removes the largest quantity of water from the blood?

  Options:
  A) Lung
  B) Skin
  C) Kidney
  D) Intestine
  Show Answer
  The correct answer is C .
• Question 644:

  

  The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.

  What physiological term can used to describe the regulation of the body temperature of the of the lizard?

  Options:
  A) Homeostasis
  B) Homoithermy
  C) Poikilothermy
  D) Osmoregulation
  Show Answer
  The correct answer is C .
• Question 645:

  

  At what stage in this cycle can man be infected?

  Options:
  A) 2
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is B .
• Question 646: The main structure in vertebrates that supports and protects the body is the Options:
  A) skeleton
  B) ligament
  C) muscle
  D) joint
  Show Answer
  The correct answer is A .
• Question 647:

  

  In the digestive system, absorption of nutrient into the blood takes place in the part labelled

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 648: If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows Options:
  A) humus, clay, silt, sand, stones
  B) humus, silt, clay, sand, stones
  C) humus, clay,silt, stones, sand
  D) humus, sand, silt, clay, stones
  E) clay, humus, silt, sand, stones
  Show Answer
  The correct answer is A .
• Question 649: The neck region of the tape worm, (taenia) is responsible for the Options:
  A) production of egg
  B) storage of egg
  C) formation of new segment
  D) development of the suckers
  E) fragmentaion of the body segment
  Show Answer
  The correct answer is C .
• Question 650: The micro-organisms that causes Typhoid disease is Options:
  A) trypanosome gambiense
  B) Salmonella typhi
  C) entamocbahistolytica
  D) plasmodium sp
  Show Answer
  The correct answer is B .