Answer the following in one word.
1. A diet that contains all types of nutrients in right quantities.
2. The secretion released in mouth.
3. Process of breaking down of food in simpler form.
4. The long tube in which the food passes from mouth.
5. Treating food in a way to retain its value for long time.
Answers
Answer:
1.Balanced diet provides all the nutrients that our body needs, in right quantities, along with adequate amount of roughage and water.
2.Saliva is a watery substance produced in the mouths of many animals. There are three major glands that secrete saliva: the parotid, the submandibular, and the sublingual. Saliva contains mucus that moistens food and buffers the pH of the food.
3.The process of breaking down of complex component of food into simpler substances is called digestion. The process of digestion is different in human, grass eating animals, amoeba, hydra, etc. Enzymes help in the breakdown of complex molecules like carbohydrates, protein, fats, etc. into simple molecules.
4. oesophagus :The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus. An adult's digestive tract is about 30 feet (about 9 meters) long. Digestion begins in the mouth, well before food reaches the stomach.
5.preservation.
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