(i) Which type of epithelium forms epidermis of the skin in land vertebrates ?
(ii) What is the function of its horny layers ? How such horny layers develop ?

What type of epithelium forms the parietal layer of the glomerular capsule, the PCT and the DCT?

How is corpus luteum formed? What is its function?

What is the main function of compound epithelium and what are its types.

How is the depletion of ozone layer caused ? What are its consequences ?

______epithelium consists of two or more cell layers and has protective function as it does I our skin.

______epithelium consists of two or more cell layers and has protective function as it does in our skin.

______epithelium consists of two or more cell layers and has protective function as it does to our skin.

During monsoon days, a blue green layer was developed on moist soil of village streets making them slippery. On the instruction of science teacher Ghanshyam collected this upper slippery layer of soil from the village street and dried it. Then he added this powder to this crop field. He got very good crop yield without using any fertilizers (i) Which group of organisms is responsible for this blue green layer ? (ii) What is the possible reason for increased crop yield after addition of blue green layer to the fields (iii) Name one blue green alga which do nitrogen fixation (iv) Name one blue green alga which is a good source of protein.