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

What are biogeochemical cycles?Give an example.

  • Ans 1: Circular movement or recycling of the elements between the organism and the environment is called biogeochemical cycle.
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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

What are biogeochemical cycles?Give an example.

  • Ans 1: Circular movement or recycling of the elements between the organism and the environment is called biogeochemical cycle.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 2

Question # 1

Define pioneers and climax community.

  • Ans 1: Pioneers: The plants which first of all colonize on a bare land and start the process of succession are called pioneers.They are hardly invaders.
  • Ans 2: Climax community: it is the last stage which is most stable and remains essentially same if nothing changes in the environment to upset the balance.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 3

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 4

Question # 1

Define mutualism. Give example.

  • Ans 1: It is an association in which both members and partners get benefit from each other is called mutualism. For Example: Mycorrhiza. It is an symbiotic association between the roots of higher plants and hyphae of the fungi is called mycorrhiza. Fungus provides nutrient to the plant and in turn itself get carbohydrates from the plant
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25th Chapter

12th Class Biology Chapter 25 Short Questions

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