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 "

Try The Short Questions For 12th Class Biology Chapter 25 Short Questions Preparation

  • Total Questions10

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Biology - 12th Class Biology Chapter 25 Short Questions Preparation

Question # 1

How moderate grazing is helpful for ecosystem.

  • Ans 1: Moderate grazing is very helpful to maintain grass land ecosystem.It destroys the competitors and help the grasses to grow well.Over grazing may leads to desert.
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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

How moderate grazing is helpful for ecosystem.

  • Ans 1: Moderate grazing is very helpful to maintain grass land ecosystem.It destroys the competitors and help the grasses to grow well.Over grazing may leads to desert.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 2

Question # 1

Sketch food chain to show various trophic levels

  • Ans 1: Grass>Deer>Lion>Vulture>Decomposer
  • Ans 2: Grass 1sttrophic level
    Deer 2ndtrophic level
    Lion 3rd trophic level
    Vulture 4thtrophic level
    Decomposer 5th trophic level
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12th Class Biology Chapter 25 Short Questions Preparation - Set 3

Question # 1

Define lichens. Or What are lichens?

  • Ans 1: Lichens:It is the association between algae and fungi.Fungi give protection to algae from dessication while algae perform photosynthesis and provide nutrition to algae.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 4

Question # 1

Define foliose lichens with one example. OR What is foliose lichen stage?Give an example.

  • Ans 1: In this stage the lichens are just crumpled leaves attached at one point.It produces shade to the crustose lichens as a result of which their growth is reduced.Examples are Dermatocarpon,Permellia.
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25th Chapter

12th Class Biology Chapter 25 Short Questions

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