Cartilage is not found in

While doing work and running,you move your organs like hands,legs etc. Which among the following is correct?

Bone matrix is rich in

Nerve cell does not contain

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

Fill in the blanks:
$(a)$ Cork cells possess ........... on their walls that make them impervious to gases and water.
$(b)$ .................. have tubular cells with perforated walls and are living in nature.
$(c)$ Bone possesses a hard matrix composed of ............... and ............. .