Cork cells are made impervious to water and gases by the presence of

$(a)$ 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 tissue in which food in plants is stored.

Flexibility in plants is due to

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

State whether the following statement is true or false:
Seeds consist of the embryo along with stored food,which serves for the initial growth of the embryo during germination.