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

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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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

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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12th Class Biology Chapter 25 Short Questions Preparation - Set 2

Question # 1

What are root nodules?Give their importance.

  • Ans 1: Root nodules are present in leguminous plants which contains bacteria.Importance is that these nodules contain nitrogen fixing bacteria which fix the nitrogen and supply it to the plant and play an important role in plant growth.
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12th Class Biology Chapter 25 Short Questions Preparation - Set 3

Question # 1

Give the role of decomposers in an ecosystem.

  • Ans 1: Decomposers are the organisms which decompose the dead bodies are called decomposers;they recycle the nutrients and make them available for plant growth.
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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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12th Class Biology Chapter 25 Short Questions

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