As Rishab is fond of eating chocolates, his mother always discusses about the importance of teeth in our life and to take care of it. Rishab is reluctant to follow the instructions given by his mother. One day while bitting guava he saw blood patch on it. He became afraid and asked his mother the following questions:
(i) Which is the problem coming in my teeth which cause toothache?
(ii) How can I get rid of it?
(iii) Which value is promoted by Rishab's mother?

Label the following parts of above figure and name them.
(a) The largest gland in our body.
(b) The organ where protein digestion starts.
(c) The organ that releases digestive juice into the small intestine.
(d) The organ where bile juice gets stored.

Jaya returned from school and found that grandmother was scolding her maid, Rani as she did not come yesterday. The maid told that his son was passing watery stools frequently that's why she didn't come. Jaya's mother who was listening the discussion came to them and told Rani not to come for coming 3-4 days. She also suggested her to give his son a solution of sugar and salt in clean water, many times a day for fast recovery. Jaya was surprised. She rushed to her mother and asked the scientific reason for it. Her mother smiled and explained her the importance of this solution.
(a) Name the term used to describe the condition in which a person passes out watery stools.
(b) Name the solution of sugar and salt in water. Why is it given to a person suffering from diarrhoea?
(c) What are the values shown by Jaya?

Define oral rehydration solution and when it is given to the patient? How can you prepare ORS at home?

Explain the human digestive system with the help of labelled diagram.

How do ruminants digest the cellulose?