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 171: Carbon (iv) oxide is added to the atmosphere when ________? Options:
  A) plants build-up organic compounds
  B) plants absorb mineral salts
  C) sugars are completely broken down in animals
  D) there is thunderstorm
  Show Answer
  The correct answer is A .
• Question 172: interveinal chlorosis is normally associated with the deficiency of Options:
  A) magnesium
  B) potassium
  C) iron
  D) calcium
  Show Answer
  The correct answer is A .
• Question 173: The specific number of chromosomes in each somatic cell is represented by Options:
  A) 2^N
  B) 23
  C) 2N
  D) N
  Show Answer
  The correct answer is C .
• Question 174: The level of organism in spirogyra and volvox is Options:
  A) organ
  B) system
  C) cell
  D) Tissue
  Show Answer
  The correct answer is C .
• Question 175: Which of the following is NOT true of spirogyra? Options:
  A) Reproduces by conjugation
  B) Reproduces by fragmentation
  C) Consist of branched filaments
  D) Consist of unbranched filaments
  Show Answer
  The correct answer is C .
• Question 176: A samara differs from a cypsela by having Options:
  A) an extended pericarp
  B) a hard pericarp
  C) a pericarp fused with seed coat
  D) some hairy outgrowth on the pericarp
  Show Answer
  The correct answer is A .
• Question 177:

  Behavioral adaptation for dealing with a hot climate could include

  Options:
  A) Hibernating during the hottest part of the day
  B) Large scales on the back of a lizard
  C) Feeding during the hottest part of the day
  D) A small kidney to conserve water
  Show Answer
  The correct answer is A .
• Question 178: The set of fins that control steering, balancing and change of direction and pitch in fish is Options:
  A) dorsal and anal
  B) pectoral and pelvics
  C) caudal and dorsal
  D) anal and pelvics
  Show Answer
  The correct answer is B .
• Question 179: The most common means of transmiting the Acquired Immune Deficiency Syndrome (AIDS) is Options:
  A) from mother to child
  B) through blood transfusion
  C) through sexual intercourse
  D) through the sharing of needles
  Show Answer
  The correct answer is C .
• Question 180: Which one of the following animals is NEVER a secondary host of tapeworms? Options:
  A) cow
  B) Fish
  C) Pig
  D) Man
  E) Dog
  Show Answer
  The correct answer is D .