Meristematic tissues in plants are

The dead element present in the phloem is

List any four salient features of meristematic tissue.

Which one of the following types of meristematic tissue is also known as cambium?

$(i)$ Draw a diagram of the epidermis of a leaf showing the surface view and label the stomata,guard cells,and epidermal cells.
$(ii)$ Answer the following:
$(a)$ How is the epidermis of plants living in very dry habitats adapted?
$(b)$ Write the functions of guard cells of stomata in the leaf.

What is the chemical substance that makes the cells of the sclerenchyma hard? Mention where this tissue is likely to be present.