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 701: which of the organisms will have the lowest population in an ecosystem? Options:
  A) Hawk
  B) Cowpea
  C) Praying mantis
  D) Mouse
  Show Answer
  The correct answer is A .
• Question 702:

  

  In H, the cotyledons are carried above the soil because

  Options:
  A) the epicotyl grows faster than the hypocotyl
  B) the hypocotyl grows faster than the epicotyl
  C) both grow at the same rate
  D) the epicotyl outgrow the radicle
  Show Answer
  The correct answer is B .
• Question 703: If a plant homozygous for round and yellow (RR : YY), is crossed with a wrinkle green type (rr : yy) all of the resulting seeds will be Options:
  A) blue and wrinkled
  B) round and yellow
  C) wrinkled and yellow
  D) round and greenish yellow
  Show Answer
  The correct answer is B .
• Question 704:

  Paternity disputes can most accurately be resolved through the use of

  Options:
  A) blood group typing
  B) finger printing
  C) tongue rolling
  D) DNA Analysis
  Show Answer
  The correct answer is D .
• Question 705: Which of the following will be first digested if ingested at the same time? Options:
  A) Cooked beans
  B) Cooked rice
  C) cod liver oil
  D) Roasted beef
  Show Answer
  The correct answer is B .
• Question 706: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively? Options:
  A) pawpaw X will become turgid
  B) both will increase in size
  C) pawpaw Y will become turgid
  D) both will decrease in size
  Show Answer
  The correct answer is C .
• Question 707: The failure of transport and respiratory systems in plants as well as the presence of reddish colour in stems and leaves result from the deficiency of Options:
  A) magnesium
  B) nitrogen
  C) potassium
  D) phosphorus
  Show Answer
  The correct answer is C .
• Question 708: The following distrupts the balance in an ecosystem except Options:
  A) afforestation
  B) deforestation
  C) migration
  D) pollution
  Show Answer
  The correct answer is A .
• Question 709: In mammals, the function of the sebaceous gland is to Options:
  A) produce sweat
  B) secrete sodium choride
  C) secrete water
  D) produce an oily substance
  E) manufacture vitamin D for the skin
  Show Answer
  The correct answer is D .
• Question 710:
  

  The structure labelled 5 is used for

  Options:
  A) protein synthesis
  B) energy production
  C) secretion
  D) excretion
  Show Answer
  The correct answer is C .