Which parts of our body are composed of nervous tissue? Name the cells that make up the nervous tissue.

Name the connective tissue that is found between skin and muscles.

Give reasons for:
$(a)$ Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuoles.
$(b)$ Intercellular spaces are absent in sclerenchymatous tissues.
$(c)$ We get a crunchy and granular feeling when we chew pear fruit.
$(d)$ Branches of a tree move and bend freely in high wind velocity.
$(e)$ It is difficult to pull out the husk of a coconut.

Name the muscular tissue which is present in the iris of the eye. What is the shape of these cells?

$(i)$ What is epidermis?
$(ii)$ List three functions of epidermis.

Give the characteristics and role of the following:
$(i)$ Cutin
$(ii)$ Suberin
$(iii)$ Sclereids