GK
ECOLOGY BIODIVERSITY CONSERVATION ENVIRONMENTAL ISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Raunkiaer’s normal biological spectrum for phanerogamic flora of the world exhibits one of the following sequences of occurrence ( %) of different life forms.
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Phanerophytes, Hemicryptophytes, Therophytes, Cryptophytes, Chaemophytes.
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Phanerophytes, Hemicryptophytes, Cryptophytes, Chaemophytes, Therophytes.
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Phanerophytes, Chaemophytes, Hemicryptophytes, Cryptophytes, Therophytes.
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Phanerophytes, Hemicryptophytes, Therophytes, Chaemophytes, Cryptophytes.
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Explanation:
Detailed explanation-1: -A. Phanerophytes are any tall plants visible all year round, which can afford to carry their perennial buds well up in the air, at least 25 cm up. This, then, would include all trees, lianas, and virtually all shrubs in the strictly structural classification.
Detailed explanation-2: -Species are classified into one of nine Red List Categories: Extinct, Extinct in the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened, Least Concern, Data Deficient and Not Evaluated. Vulnerable, Endangered and Critically Endangered species are considered to be threatened with extinction.
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