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प्रश्न
The question has four options. Choose the correct answer:
The number of teeth that grow only once in human is
पर्याय
4
12
20
28
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उत्तर
4
APPEARS IN
संबंधित प्रश्न
Pancreas, Gall bladder, Glomerulus, Liver
What is the function of digestive enzymes?
What substances are contained in gastric juice? What are their functions?
What is the role of hydrochloric acid in our stomach?
The process of digestion of food in humans begins in:
(a) stomach
(b) food pipe
(c) mouth
(d) small intestine
Which part of alimentary canal receives bile from the liver?
(a) oesophagus
(b) small intestine
(c) stomach
(d) large intestine
When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is and enzyme for digestion. The partially digested food then enters into small intestine for further digestion.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C?
(b) Name the tube D.
(c) What is the movement E known as?
(d) What are (i) F (ii) G, and (iii) H?
Prepare a possible vegetarian menu for your dinner which would provide all the necessary nutrients.
How is the liver an important organ in our body?
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Write four sequential steps of the procedure of the experiment "Preparing a temporary mount of a leaf peel to show stomata".
Find the odd one out. Give reasons for your choice.
Match items in column A with the appropriate items in Column B:
| Column A | Column B | ||
| 1 | HCl | a | Lactose |
| 2 | Rennin | b | Pellagra |
| 3 | Enteropeptidase | c | Rumen |
| 4 | Cellulose | d | Pepsin |
| 5 | Ptyalin | e | Starch |
| 6 | Vitamin | f | Pernicious anaemia |
| 7 | Intestinal juice | g | Trypsin |
| 8 | Bile salt | h | Casein |
| 9 | Vitamin A | i | Micelle |
| 10 | Goitre | j | Night-blindness |
| k | Iodine | ||
Correct the spellings: Disegion
The question has four options. Choose the correct answer:
Stomach in vertebrates is the chief site of digestion of
A calcified connective tissue from which the basic shape of the tooth is derived is known as ______.
Identify the part of the digestive system which is vestigial in humans?
Identify the correct human dental formula.
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains:
In which part of the alimentary canal food is finally digested?
