The muscular tissue which functions throughout life continuously without fatigue is

What is the difference between xylem and phloem?

$(a)$ 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.

Which parts of our body are composed of nervous tissue? Name the cells that make up the nervous tissue.

Animal tissues are different from plant tissues. State the reasons.

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