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प्रश्न
Name the types of teeth seen in humans.
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उत्तर
Human teeth are of four kinds:
- Incisors are the four front teeth at the middle of each jaw. They are chisel-shaped for biting and cutting.
- Canines are one on either side of the incisors in each jaw. They are pointed for tearing the food.
- Premolars are two on each side of canines in each jaw. They help in crushing and grinding the food.
- Molars are the last three teeth on each side in each jaw. They have a broad uneven surface for finer crushing and grinding of ingested food.
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संबंधित प्रश्न
Name the hormone that helps in regulating level of sugar in our blood. Name the gland that secrets it.
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Answer in detail.
Liver does not secrete any enzymes yet it helps indigestion. How?
Describe the digestion of food in small intestine.
Mark odd one in the series:
Who is telling a lie?
Tongue: My taste-buds can tell only a sweet taste.
Who is telling a lie?
Appendix: Digestion is impossible without me.
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
Digestion of food starts in ______ and gets completed in ______.
Solve the crossword given as Figure.
| Across | Down | ||
| 1. | Cream-coloured digestive gland | 2. | Feeds with the help of pseudopodia |
| 3. | Undigested excretory solid residues | 6. | Total number of molars in one jaw of an adult |
| 4. | Organ that mixes saliva with the food | 8. | Largest gland |
| 5. | Point of defecation | 9. | Watery secretion in the mouth |
| 7. | Stored in gall bladder | 11. | A ruminant |
| 10. | Finger-like outgrowth in the small intestine | 12. | Form of food chewed by ruminants |
| 13. | Kind of taste buds | ||
| 14. | Kills bacteria in the stomach | ||
