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 freshwater pond may contain Options:
  A) tadpole, water boatman, leeches and crab
  B) water beetle, shrimps, water snail and water bug
  C) water lily, fish, water scorpion and dragon larva
  D) pon skater, water lily, shark and mosquito larva
  Show Answer
  The correct answer is C .
• Question 682:

  The structure that joins the two strands of a chromosome together is the?

  Options:
  A) spindle
  B) cellulose
  C) centromere
  D) chromatid
  Show Answer
  The correct answer is C .
• Question 683: The function of lymph nodes is to Options:
  A) supply oxygen
  B) filter out bacteria
  C) form red blood cells
  D) supply amino acids
  E) supply simple sugars
  Show Answer
  The correct answer is B .
• Question 684: When the adults have reach a certain degree of weakness, the process of binary fission is replaced by conjugation in Options:
  A) Paramecium
  B) Euglena
  C) Amoeba
  D) Plasmodium
  Show Answer
  The correct answer is A .
• Question 685:

  Digestive enzymes are responsible for

  Options:
  A) Breaking down food into smaller molecules
  B) Absorbing nutrients into the bloodstream
  C) Regulating the pH of the digestive tract
  D) Transporting food through the digestive system
  Show Answer
  The correct answer is A .
• Question 686:

  In which of the following does external fertilization take place?

  Options:
  A) toad
  B) lizard
  C) bird
  D) cockroach
  Show Answer
  The correct answer is A .
• Question 687: Countershading is an adaptive feature that enables animals to Options:
  A) fight enemies
  B) remain undetected
  C) warn enemies
  D) attract mates
  Show Answer
  The correct answer is B .
• Question 688: Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents Options:
  A) The father possesses a gene for shortness
  B) The mother posesses a gene for shortness
  C) Nature makes the child short
  D) Both parents possess gene for shortness
  Show Answer
  The correct answer is D .
• Question 689: The sensory cell that responds to dim light is referred to as the Options:
  A) cone
  B) lens
  C) rod
  D) iris
  Show Answer
  The correct answer is C .
• Question 690:

  

  Use the diagram above to answer this question.

  The type of protective adaptation 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 .