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 681: A food substance was treated with a few drops of Sudan III solution and a red coloration was obtained. The food contained Options:
  A) protein
  B) starch
  C) fat
  D) mineral salt
  Show Answer
  The correct answer is C .
• Question 682:

  The movement of part of a plant in response to external stimulus of no particular direction is?

  Options:
  A) taxism
  B) tropism
  C) haptotropic movement
  D) nastic movement
  Show Answer
  The correct answer is D .
• Question 683: 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 684: The difference in structure, morphological and behavior of plant and animal is called Options:
  A) adaptation
  B) evolution
  C) variation
  D) succession
  Show Answer
  The correct answer is C .
• Question 685:

  

  Use the diagram to answer the question. The diagram shows that the organisms are

  Options:
  A) hermaphrodite
  B) viviparous
  C) oviparous
  D) ovoviparous
  Show Answer
  The correct answer is C .
• Question 686: A peculiar characteristics of mammals is that they Options:
  A) have teeth
  B) are warm-blooded
  C) have lungs
  D) have sabaceous glands
  Show Answer
  The correct answer is D .
• Question 687:

  Use the diagram to answer the question.

  The type of protective adaption exhibited by the animal is

  Options:
  A) disruptive colouration
  B) flash colouration
  C) countershading colouration
  D) warning colouration
  Show Answer
  The correct answer is C .
• Question 688:

  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 689: If X^N is the dominant allele for normal vision and Xⁿ the recessive allele for colour blindness, a boy with the genotype YXⁿ will be Options:
  A) have normal vision
  B) be colour-blind
  C) be totally blind
  D) be a carrier of colour blindness
  Show Answer
  The correct answer is B .
• Question 690: The supporting tissue in xylem is most poorly developed in Options:
  A) mangrove swamp plants
  B) grassland plants
  C) submerged water plants
  D) desert plants
  Show Answer
  The correct answer is C .