Which of the following cells is found in the cartilaginous tissue of the body?

$(a)$ Name the animal tissue which is present in the larynx.
$(b)$ Write the chemical constituents of this tissue.
$(c)$ What functions does this tissue perform?

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

$A$ nail is inserted in the trunk of a tree at a height of $1$ metre from the ground level. After $3$ years,the nail will:

$(a)$ 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.

Write any one characteristic of meristematic tissue.