FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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transport water from the root to the steam then to the leaf.
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transport water from the leaves to where it is needed
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protecting the plant against infectious diseases
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organic food from the leaves to where it is needed
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Detailed explanation-1: -xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support.
Detailed explanation-2: -The main function of xylem is conduction of water and minerals from the roots upwards to stem and leaves.
Detailed explanation-3: -Water from the soil enters the root hairs by moving along a water potential gradient and into the xylem through either the apoplast or symplast pathway. It is carried upward through the xylem by transpiration, and then passed into the leaves along another water potential gradient.
Detailed explanation-4: -The “stickiness” between water molecules and the xylem vessel walls is called adhesion. Cohesion and adhesion work together in the xylem to pull water molecules from the roots, up the stem, and out of the plant through the stomata. The flow of water transport is impacted by the plant rate of transpiration.