What are blood platelets?

$A$ tall tree has many branches. Which tissue helps in the lateral conduction of water in these branches?

$(a)$ Why is connective tissue called so?
$(b)$ What is the function of the areolar connective tissue?
$(c)$ Which substance is present in the adipocyte? How does it help?

$(a)$ 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.

$A$ long tree has several branches. The tissue that helps in the sideways conduction of water in the branches is

$(a)$ What is the function of the tissue present in the bark of a tree?
$(b)$ Which substance is present in the adipocyte? How does it help?