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 311:

  Which of the following is an example of continous variation?

  Options:
  A) Human blood groups
  B) Sex difference in human
  C) Haemoglobin types
  D) Height in humans
  Show Answer
  The correct answer is D .
• Question 312: The F₁ of a cross between a tall and a dwarf plant was tall. The F₁ was advanced to F₂. How many of 120F₂ plants will be dwarf? Options:
  A) 30
  B) 60
  C) 90
  D) 120
  Show Answer
  The correct answer is A .
• Question 313: In woody plants, grass and water vapour are transported across the stems by the Options:
  A) xylem fibres
  B) medullary rays
  C) sieve tubes
  D) phloem fibres
  E) phloem parenchyma
  Show Answer
  The correct answer is A .
• Question 314: Viruses differ from all forms of life because they Options:
  A) have thick cell wall
  B) feed on waste products of other organisms
  C) causes infectious diseases
  D) require other living cells to multiply
  Show Answer
  The correct answer is D .
• Question 315: The gall bladder of mammal has a duct connected to the Options:
  A) liver
  B) duodenum
  C) small intestine
  D) pancreas
  Show Answer
  The correct answer is A .
• Question 316: Osmosis can be defined as the movement of Options:
  A) Molecules from solution of higher concentration to low concentration
  B) Molecules from solution of low concentration to high concentration
  C) Water from solution of high concentration to low concentration
  D) Water across a semi-permeable membrane from solution of low concentration to high concentration
  E) Water across a semi-permeable membrane from solution of high concentration to low concentration
  Show Answer
  The correct answer is E .
• Question 317:

  When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be

  Options:
  A) isotonic
  B) dilute
  C) hypotonic
  D) hypertonic
  Show Answer
  The correct answer is C .
• Question 318: Which of the following is not part of the mammalian male reproductive organ? Options:
  A) Epididymis
  B) Vas deferens
  C) testis
  D) Vulva
  Show Answer
  The correct answer is D .
• Question 319:

  

  In the diagram, the illustration is a typical example of a plant pollinated by

  Options:
  A) wind
  B) man
  C) insects
  D) birds
  Show Answer
  The correct answer is A .
• Question 320: An example of cryptic colouration is the Options:
  A) Mottled colours on the moths that rest in lichens
  B) bright colour of an insect pollinated flower
  C) Green colour of a plant
  D) Bright marks on poisonous tropical frog on veriegated leaves
  Show Answer
  The correct answer is A .