In our eyes there are two kinds of special cells that help us to see. The rod cells enables us to see in dark and cone cells enable us to see in the ambient light . Rod cells create black and white images on retina. Cone cells create colored images. 1. Cone cells :- These
Human digestive system includes two basic things Alimentary canal 2. Digestive glands 1 Alimentary canal : human alimentary canal is basically a pipe of varying diameter which is designed for the maximum absorption of food. human alimentary canal is complete that is it two different openings for the ingestion of food and excretion of waste
