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Name the types of succession of plants based on the nature of habitat.
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Give reasons – ‘Primary succession is always slower than secondary succession’
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What are ‘pioneer species’? Give two examples of them.
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Explain the following sequence of succession after a forest fire.
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Explain the progress of ecological succession in newly formed volcanic island.
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Which is the primary precursor of IAA in plants?
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What do you mean by pioneer species?
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Name various seral stages from pioneer species to climax community with suitable examples in hydrarch succession.
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Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
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Describe the different communities involved in the process of succession.
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Write two applications of Auxins.
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Give the main features of mutation theory.
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Name the hormone that is responsible for apical dominance.
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A farmer wants to remove broad-leaved weeds from the jowar plantation in his field. Suggest any plant hormone to remove such weeds.
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Match list I with list II
| List I | List II | ||
| A. | A pair of chromosomes extra with diploid | i) | monosomy |
| B. | One chromosome extra to the diploid | ii) | tetrasomy |
| C. | One chromosome loses from diploid | iii) | trisomy |
| D. | Two individual chromosomes lose from diploid | iv) | double monosomy |
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Given below function performed by plant hormone. Which hormone is responsible for the given action?
Apical dominance
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Explain the following term with reference to ecological succession.
Seral stages
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Explain the following term with reference to ecological succession :
Pioneers
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Explain the following term with reference to ecological succession.
Hydrosere
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Which one is the most accurate definition of gross primary productivity?
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