Tag: diffusion

Osmosis: introduction, types and significance

It is a special type of diffusion, which involves the movement of water through a semi-permeable membrane (differentially permeable membrane). The movement of molecules takes...

Epithelial tissue and its types

Introduction Epithelial tissue is one of the four basic types of animal tissues. It is a covering tissue. It forms thin sheets which cover body...

Phylum: protozoa

First animals, solitary or colonial and protoplasmic grade of organization. Simple, unicellular microscopic organisms. Generally free living found in fresh water, salt water and damp...