FOREST ECOLOGY
FOREST MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Growth layer in a tree root, trunk, or limb
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Rings in a cross section of a tree root, trunk, or limb representing one year’s growth
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Cell structures that transport water, minerals, and nutrients within plants from the roots to the leaves
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phloem; transports food downward in a tree
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Detailed explanation-1: -Xylem transports water, minerals, and nutrients from the soil to all the plant parts. There are two types of “transport” tissues in plants-xylem and phloem. Water and solutes are transported by the xylem from the roots to the leaves, and food is transported from the leaves to the rest of the plant by the phloem.
Detailed explanation-2: -The xylem transports water and minerals from the roots up the plant stem and into the leaves. In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels. Vessels: Lose their end walls so the xylem forms a continuous, hollow tube.
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 type of vascular tissue which transports water and minerals from roots to leaves through the stems and branches is xylem.