$(a)$ 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?

$(a)$ Why are complex tissues called so?
$(b)$ Why is connective tissue called so?
$(c)$ What is the function of the tissue present in the lining of kidney tubules?

Which of the following does not lose their nucleus at maturity?

$(a)$ Give reasons for the following:
$(i)$ Multicellular organisms are considered more efficient.
$(ii)$ Sclerenchyma cells have a narrow lumen.
$(iii)$ Epidermis is thicker in desert plants though it is usually single layered.
$(b)$ Name the following:
$(i)$ Tissue that occurs in specific regions of growth.
$(ii)$ Tissue present at the growing tips of stems and roots.
$(iii)$ Tissue at the base of the leaves or internodes on twigs.
$(iv)$ Basic packing tissue in the form of a few layers of cells.

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

What are the distinctive features of cardiac muscles?