FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to carry water from the roots to the other parts of the plant
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provide support for the tree
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provide resistance against insects
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for food for the insects
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Detailed explanation-1: -In vascular plants, the xylem is the vascular tissue that is responsible for the conduction of water and nutrients from the roots. It may be classified as primary or secondary, depending on the origin of growth.
Detailed explanation-2: -Sapwood is involved in conduction of water and minerals from root to leaf. Sapwood is the innermost secondary xylem and is lighter in colour. Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.
Detailed explanation-3: -Sapwood performs the physiological activities, such as conduction of water and nutrients, storage of food, etc. The function of heartwood is no longer of conduction, it gives only mechanical support to the stem. The heartwood part of a tree is also far more susceptible to fungus than the centre of the trunk.