Which of the following cells is found in the cartilaginous tissue of the body?

Draw a labelled diagram of unstriated (smooth) muscle tissue and mention its occurrence,features,and functions.

$(i)$ 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.

$(a)$ Differentiate between meristematic and permanent tissues in plants.
$(b)$ Define the process of differentiation.
$(c)$ Name any two simple and two complex permanent tissues in plants.

Name the meristem which is responsible for the increase of girth of root.