Biology Questions and Answers

General Knowledge


    1) Ordinary table salt is sodium chloride. What is baking soda?

  • A)Potassium chloride
  • B)Potassium carbonate
  • C)Potassium hydroxide
  • D)Sodium bicarbonate
Answer: D

    2) Ozone hole refers to

  • A)hole in ozone layer
  • B)decrease in the ozone layer in troposphere
  • C)decrease in thickness of ozone layer in stratosphere
  • D)increase in the thickness of ozone layer in troposphere
Answer: C

    3) Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

  • A)angiosperms
  • B)gymnosperms
  • C)monocotyledons
  • D)dicotyledons
Answer: B

    4) Pollination is best defined as

  • A)transfer of pollen from anther to stigma
  • B)germination of pollen grains
  • C)growth of pollen tube in ovule
  • D)visiting flowers by insects
Answer: A

    5) Plants receive their nutrients mainly from

  • A)chlorophyll
  • B)atmosphere
  • C)light
  • D)soil
Answer: D