Fsc Part 2 Online Preparation for Biology Chapter No 25 (Ecosystem)

Online Short Questions For Chapter 11 "12th Class Biology Chapter 25 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 25 Short Questions Preparation

Question # 1

Differentiate between predator and prey.

  • Ans 1: Predator: Predator which catches and kills;the other organism and use it as food is called predator.It is usually a hunter and carnivore like lion,cat dog etc.
  • Ans 2: Prey: Prey is the organism which is caught by the predator and eaten is called prey like rabbit,deer etc.
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Prepare Complete Set Wise Questions For Chapter 11 "12th Class Biology Chapter 25 Short Questions Preparation "

12th Class Biology Chapter 25 Short Questions Preparation - Set 1

Question # 1

Differentiate between predator and prey.

  • Ans 1: Predator: Predator which catches and kills;the other organism and use it as food is called predator.It is usually a hunter and carnivore like lion,cat dog etc.
  • Ans 2: Prey: Prey is the organism which is caught by the predator and eaten is called prey like rabbit,deer etc.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 2

Question # 1

How does over grazing affect a grass land ecosystem?

  • Ans 1: Due to ever grazing the productivity of the grass land is affected.If too much animals graze then grass will hardly regrow.Secondly the hooves of the grazing animals will trample the soil in to hard layer as a result of which rain water will not penetrate this soil.The final result of over grazing is barren land.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 3

Question # 1

What is parasitism?Give its kind.

  • Ans 1: Process in which a parasite lives in living organisms and cause some harm to its host is called parasitism or relationship between host and parasite is called parasitism.
  • Ans 2: Kinds of parasites: Ectoparasite: parasite which lives on outer surface of the body is called ectoparasite like lice,ticks and mites.
    Endoparasites: Parasites which live inside the body of its host is called endoparasite like liver fluke.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 4

Question # 1

Differentiate between secondary and primary succession.

  • Ans 1: Primary succession: Primary succession is the process of succession which starts on a bare rock or dry place where no life exists earlier is called primary succession.
  • Ans 2: Secondary succession: Secondary succession is the process which starts on a place where life exists but sue to some reasons it is destroyed is called secondary succession.
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12th Class Biology Chapter 25 Short Questions

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