Cartilage is not found in

State whether the following statement is true or false:
The brain,spinal cord,and nerves are all composed of muscular tissue.

Answer the following:
$(i)$ How is the epidermis of plants living in very dry habitats adapted?
$(ii)$ Write the functions of guard cells of stomata in the leaf.

Name the element$(s)$ of xylem which
$(i)$ help in transport of water and minerals,
(ii) stores food,and
(iii) provides mechanical support.

The chemical present in the walls of bark of the tree which makes them impervious to gases and water is

Differentiate between bone and cartilage with respect to structure,function and location.