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प्रश्न
Observe the diagram given alongside and answer the following:
- Name the parts numbered 1-8.
- Which parts shown in the diagram are non-living?
- Is the tooth suited for cutting, tearing or grinding?
- What is the function of parts 8 and 7?
- What is the total number of teeth present in adult human beings?
- Write the dental formula of human beings.
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उत्तर
- 1. Enamel; 2. Dentine; 3. Blood capillaries; 4. Cement; 5. Blood vessels; 6. Periodontal membrane; 7. crown and 8. root.
- Enamel, dentine and cement
- Yes
- The function of the root is to hold the teeth in the jaw and the function of the crown is it completely encircles and protects the teeth.
- 32
- The dental formula of humans is 12/2, C 1/1, P 2/2, M 3/3 (16x2= 32).
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संबंधित प्रश्न
Match the items of Column I with suitable items in Column II.
| Column I | Column II | ||
| (a) | Salivary gland | (i) | Bile juice secretion |
| (b) | Stomach | (ii) | Storage of undigested food |
| (c) | Liver | (iii) | Saliva secretion |
| (d) | Rectum | (iv) | Acid release |
| (e) | Small intestine | (v) | Digestion is completed |
| (f) | Large intestine | (vi) | Absorption of water |
| (vii) | Release of faeces |
Where is digested food absorbed into blood in human body?
Name the biological catalysts which bring about chemical digestion of food.
________ is the largest gland in the body.
Write true or false for the below statement. Rewrite the false statements correctly.
The wave-like motion of stomach muscles to push the food is called peristalsis.
Differentiate between
Digestion and Absorption
Name different steps involved in animal nutrition. Explain.
Correct the spellings: Pespin
Correct the spellings: Disegion
The question has four options. Choose the correct answer:
Stomach in vertebrates is the chief site of digestion of
The question has four options. Choose the correct answer:
Teeth present in the upper molar of human beings are
Who is telling a lie?
Liver: I am the largest gland in the body.
Name the organs of the digestive system
What makes respiration and blood circulation go on all the time, and the processes of digestion happen at the right time?
The other name of food pipe is alimentary canal.
Name the organism which lives in the digestive system of human ______.
Liver produces for ______ the digestion of fat.
What are the compounds present in the food?
Given below from (i) to (iv) are some food items.
- Boiled and mashed potato
- Glucose solution
- A slice of bread
- Mustard oil
Which of the above will give a blue-black colour when tested with iodine?
What is chyme?
