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 21: The movement of plant in response to external stimulus of no particular direction is Options:
  A) taxism
  B) tropism
  C) hyptotropic movement
  D) nastic movement
  E) phototropism
  Show Answer
  The correct answer is D .
• Question 22: Atmospheric nitrogen is converted to soil nitrogen for plant use by Options:
  A) nitrification and combustion
  B) putrefaction and lightning
  C) lightning and nitrification
  D) combustion and putrefaction
  Show Answer
  The correct answer is B .
• Question 23:

  

  The figure above shows diagram for the correction of shortsightedness. If the unbroken lines represents light rays from the object and the broken lines the refracted rays through the lens, which of these is correct

  Options:
  A) A
  B) B
  C) C
  D) D
  E) E
  Show Answer
  The correct answer is D .
• Question 24:

  Which of the following waste products in plants is excreted through the stomata and lenticles?

  Options:
  A) carbon dioxide
  B) alkaloids
  C) tannins
  D) anthoocyanins
  Show Answer
  The correct answer is A .
• Question 25: Trace elements are required by plants mainly for the Options:
  A) formation of pigments and enzymes
  B) production of energy and hormones
  C) manufactured of carbohydrates
  D) manufacture of proteins
  Show Answer
  The correct answer is A .
• Question 26: Which of the following plant structures lacks a waterproof cuticle? Options:
  A) leaf
  B) stem
  C) root
  D) shoot
  Show Answer
  The correct answer is C .
• Question 27: Hydrostatic skeleton is the type of supporting system found in Options:
  A) mammals
  B) reptiles
  C) oligochaetes
  D) arthropods
  Show Answer
  The correct answer is C .
• Question 28:

  The temporary union of two organisms and the exchange of micronuclear elements is called

  Options:
  A) Conjugation
  B) Binary fusion
  C) Extrapolation
  D) Interexchange
  Show Answer
  The correct answer is A .
• Question 29: A feature associated with the Y-chromosome in human is Options:
  A) long eyelashes
  B) prominent fingernails
  C) facial hairs
  D) enlarged breast
  Show Answer
  The correct answer is C .
• Question 30: Which of the following is not an excretory organ? Options:
  A) Lungs
  B) Kidney
  C) Leaf
  D) Large intestine
  E) Skin
  Show Answer
  The correct answer is C .