Name the following and give one characteristic of each:
$(a)$ Living tissue that provides mechanical support in plants.
$(b)$ Highly specialised cells for being stimulated and then transmitting the stimulus very rapidly within the body of animals.
$(c)$ Animal tissue with elongated cells and contractile proteins responsible for movement.

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(N/A) Collenchyma: It is a living mechanical tissue characterized by irregular thickenings of cellulose and pectin at the corners of the cells.
$(b)$ Nervous tissue (Neurons): These are highly specialized cells capable of receiving stimuli and transmitting impulses rapidly throughout the body.
$(c)$ Striated (Skeletal) muscles: These tissues consist of long,cylindrical,unbranched fibers that contain contractile proteins (actin and myosin) and exhibit characteristic light and dark bands (striations).

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$(a)$ Epidermis is thicker in desert plants,though it is usually single-layered.
$(b)$ Presence of a waxy layer (secreted by the epidermis) on the outer surface of plants.
$(c)$ Meristematic cells have a prominent nucleus and dense cytoplasm but lack a vacuole.

$(i)$ Draw a diagram of the epidermis of a leaf showing the surface view and label the stomata,guard cells,and epidermal cells.
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$(a)$ How is the epidermis of plants living in very dry habitats adapted?
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$(b)$ Write the chemical constituents of this tissue.
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Survival of plants in terrestrial environment has been made possible by the presence of

Give reasons for the following:
Tissue $A$: Cells are filled with fat globules and the tissue acts as an insulator.
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