Cartilage is not found in

Why are xylem and phloem called complex tissues? How are they different from one another?

Give one reason for the following statements:
$(a)$ Blood is called a connective tissue.
$(b)$ Muscles are able to contract and relax to bring about movements.
$(c)$ Muscles of the heart are called involuntary muscles.

$(a)$ Draw the adipose connective tissue.
$(b)$ Mention one region in the body where this tissue is present and state one function of this tissue.

Write the location and function of collenchyma tissue.

$A$ neuron consists of