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3. Give reasons. a) Xylem is a conductive tissue.b) Adipose tissue acts as an insulator of heat.c) Cardiac muscle works without rest.d) Epidermis provides protection to plants. |
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Answer» r:Explanation:Xylem is a conductive tissue: Xylem is also called conducting tissues because they are involved in the transportation of food and water throughout the plant. The cells of the epidermis are tightly packed together forming a mechanical barrier Adipose tissue acts as an insulator of heat Adipose tissue acts as an insulator in the body due to its fat storage. Fat molecules are bad conductors and therefore do not allow the conduction of heat and in this WAY, they act as an insulator due to storage of fat molecules.Cardiac muscle works WITHOUT rest The massive amount of energy-generators means cardiac muscle, in a healthy STATE, need never rest: there is always some energy being transferred to the muscle at the same time that more energy is being derived from caloric intakeEpidermis provides protection to plants: Epidermis outermost, protoderm-derived layer of cells covering the STEM, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical INJURY, water loss, and infection. |
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