In single-celled animals the food is taken

Answer the following:

Write a point of difference between parasites and saprophytes.

Name the following:

The first enzyme to mix with food in the digestive tract

Draw the diagram of open and closed stomata and label:

a) chloroplast
b) guard cells

Hari had a problem with carbohydrate, protein and fat metabolism in his body:

a) Name the element he must include in his diet to overcome this problem.

b) Give one symptom of the deficiency disease caused in the above.

Answer the following:

A rabbit has a longer small intestine than a tiger. Give scientific reason.