St. Britto Hr. Sec. School - Madurai
12th Biology Weekly Test -1 ( Botany - Principles of Ecology )-Aug 2020
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Define ecology.
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How does an orchid ophrys ensures its pollination by bees?
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What is Phytoremediation?
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Lichen is considered as a good example of obligate mutualism. Explain.
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What is unique about the stomata seen in xerophytes?
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What is seed ball?
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What is soil profile? Explain the characters of different soil horizons.
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What is co-evolution?
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Water is very essential for life. Write any three features for plants which enable them to survive in water scarce environment.
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How do seeds disperse by water?
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Explain Raunkiaer classification in the world’s vegetation based on the temperature
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Describe dispersal of fruit and seeds by animals.
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What is soil profile? Explain the characters of different soil horizons.
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