Q. Which type of epithelial tissue allows transportation of substances through a selective permeable surface in the lining of food vessels or lung alveoli?
Answer: Simple squamous epithelium
Notes: There are two types of squamous epithelium— simple squamous epithelium and stratified squamous epithelium. Simple squamous epithelium lines the blood vessels or alveoli in lungs. where transportation of substances occurs through selectively permeable membrane. It is made up of extremely thin and simple flat cells that form a delicate lining.