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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
विकल्प
4
12
20
28
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उत्तर
4
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संबंधित प्रश्न
What is the function of digestive enzymes?
The gall bladder temporarily stores bile.
Water from the undigested food is absorbed mainly in the ______.
Which part of the digestive canal is involved in:
Complete digestion of food ______.
How do carbohydrates get digested in human beings?
Where are proteins first digested in the alimentary canal?
| 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. |
- What is W known as?
- What are (i) X and (ii) Y?
- What are organisms Z?
- State one way of removing layer W from the teeth.
Write the function of the following in the human alimentary canal:
Saliva
Fill in the blank.
The _______ is a common opening of food pipe and windpipe
Define the following term:
assimilation
Give reasons for the following.
Meat eating animals have strong canines.
Differentiate between.
Mechanical digestion and Chemical digestion
Complete the following enzymatic reaction.
Sucrose \[\ce{->[sucrase]}\] ___________+ __________
Answer in detail.
Name the four types of teeth and their functions
Answer in detail.
Liver does not secrete any enzymes yet it helps indigestion. How?
State one difference in nutrition: Autotroph and Heterotroph
Correct the spellings: Caceum
Appendix is a vestigial organ in humans and functional in herbivorous animals for the digestion of ____________.
The contraction and expansion movement of the walls of the food pipe is called ____________.
What is the significance of the emulsification of fats?
