Flexibility in plants is due to

$(a)$ Voluntary muscles are also known as skeletal muscles. Justify.
$(b)$ Give two structural characteristics of these voluntary muscles.

Survival of plants in terrestrial environment has been made possible by the presence of

Mention the role of epidermis in the following:
$(a)$ In the aerial parts of the plant.
$(b)$ In leaves.
$(c)$ In roots.

Meristematic tissues in plants are

$(a)$ Name the animal tissue which is present in the larynx.
$(b)$ Write the chemical constituents of this tissue.
$(c)$ What functions does this tissue perform?