CBSE Class 9 Answered

Squamous epithelial tissue protects the underlying parts of the body from mechanical injury, pathogens and dessication. It also forms a selectively permeable surface where filtration and transportation of substances can occur.

Blood transports gases, digested food, hormones and waste materials to different parts of the body. The white blood cells are important in protecting the body from diseases and foreign materials.

Stratified squamous epithelium prevents wear and tear of the skin. It is also water-proof.

Adipose tissue acts as an insulator and a fat reservoir. It also forms shock absorbing cushions around kidneys and eye-balls.