A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.

Construct a flow chart showing the passage of food through the alimentary canal of man.

Trace the main steps of digestion of proteins as food passes through alimentary canal of man.

A ray of light is incident on a galss slab making on angle of 30^(@) with the surface . If the angle of refraction in glass is 33^(@) , the angle of deviation of the ray during its passage through the galss slab is

Raheem prepared a model showing the passage of the food through different parts of the alimentary canal? Observe this and label it’s parts.

Raheem prepared a model showing the passage of the food through different parts of the alimentary canal. Observe this and label its parts.

Answer brief : (i) Why are villi present in the intestine and not in stomach? (ii) How does pepsinogen change into its active form? (iii) What are the basic layers of the wall of alimentary canal? (iv) How does bile help in digestion of fat?

In case of mechanical wave, a particle oscillates and during oscillation its kinetic and potential energy changes. So, when particle is passing through mean position,