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प्रश्न
Who is telling a lie?
Appendix: Digestion is impossible without me.
विकल्प
Truth
Lie
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उत्तर
Lie
Explanation:
Appendix is not required for digestion.
संबंधित प्रश्न
Write names of different parts of human digestive system and explain functions of any three parts.
The stomach releases hydrochloric acid and ______ juices which act on food.
The inner wall of the small intestine has many finger-like outgrowths called ______.
Label the following figure of the digestive system.
A part of the human digestive system
What is trypsin? What is its function?
When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance B. The substance B first dissolves the calcium salts from the top part C of the tooth and then from its middle part D forming holes E. These holes ultimately reach the part F in the lower part of tooth which contains nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache.
(a) What are (i) organisms A, and (ii) substance B?
(b) What are (i) part C, and (ii) part D, of tooth known as?
(c) By what name are the holes E in the tooth known?
(d) Name the part F of the tooth.
(e) What will happen if organisms A reach part F of the tooth known?
If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in.
(a) What is W known as?
(b) What is (i) X, and (ii) Y?
(c) What are organisms Z?
(d) State one way of removing layer W from the teeth.
Give any four reasons why water is necessary in our body.
Draw a labelled diagram to show the internal structure of a mammalian tooth with two roots.
Put a tick (✓) against the most appropriate alternative in the following statement.
Saliva converts starch into:
State whether the following statement is True or False.
The ducts from the salivary glands open into the duodenum.
Fill in the blanks in the table (1-5) by selecting the suitable names of substances from the list given below:
(steapsin, peptones, fatty acids, proteoses, protein).
| Digestive Enzymes | Acts on | To convert into |
| (i) Pepsin | _________(2) | ________(3) and |
| (ii) _______(1) | Fats |
________(4) _________(5) |
Answer in detail.
What is meant by digestion? How does it differ from nutrition?
Describe the human alimentary canal.
Name the enzymes secreted by the following: Ileum
Identify the part of the digestive system which is vestigial in humans?
Liver produces for ______ the digestion of fat.
Choose the odd one:
In which of the following vertebrate group/groups, the heart does not pump oxygenated blood to different parts of the body?
Describe the alimentary canal of man.
