define bark?what is its importance.why are certain bark used in medicines??
Answers
Answer:
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Bark is outer protective covering of stems and roots of woody plants. It is mostly made up of cork that consists of several layers of dead rectangular cells.
Importance:
■Protection against water loss due to impermeable nature of cell walls. ■protection against microbe is due to the impressive nature.
■ insulation from extreme of temperature mechanical injury and browsing by animals .
Medicines:
♤Quinine is obtained from the bark of Cinchona.
♤Taxol is got from bark of Taxus.
Answer:
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Explanation:
=> Bark is the outer covering of trees. It is a kind of epidermis and is used to protect the tree but the cells are dead. Certain barks are used in medicines because they may have certain oils present in it.
=> Bark = A sound resembling a bark, typically one made by someone laughing or coughing.
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