The intestine absorbs digested food materials. Which type of epithelial cells are responsible for this?

Name a connective tissue which has a hard matrix.

Fill in the blanks:
$(a)$ ............. are forms of complex tissue.
$(b)$ .............. have guard cells.
$(c)$ Cells of cork contain a chemical called .............
$(d)$ Husk of coconut is made of ............. tissue.
$(e)$ ............ gives flexibility in plants.
$(f)$ ............... and ............... are both conducting tissues.
$(g)$ Xylem transports ............... and ............... from soil.
$(h)$ Phloem transports ............... from ............... to other parts of the plant.

$(a)$ Identify the given figures.
$(b)$ State in brief their structure.
$(c)$ Describe the role performed by the two.

Contractile proteins are found in

Name the muscular tissue which is present in the iris of the eye. What is the shape of these cells?