Name the animal tissue which acts as a heat insulator.

Name the tissue that transmits stimuli in our body. How does this tissue enable animals to move rapidly in response to stimuli?

Explain the basic characteristics for the classification of permanent tissues in plants.

Identify the tissues present in the following and give one specific feature of each:
$(i)$ Leaf stalks below epidermis.
$(ii)$ In stem,around vascular bundles.
$(iii)$ At root and shoot tip.

Fill in the blanks:
$(a)$ Cork cells possess ........... on their walls that make them impervious to gases and water.
$(b)$ .................. have tubular cells with perforated walls and are living in nature.
$(c)$ Bone possesses a hard matrix composed of ............... and ............. .

Name two types of $(i)$ fibres,$(ii)$ cells present in areolar connective tissue. $(iii)$ Where is this tissue located?