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प्रश्न
Define with examples: Autotrophs
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उत्तर
These are the organisms which prepare organic food in their body from simple inorganic materials like carbon dioxide, water, etc.
Example - green plants and certain protests.
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संबंधित प्रश्न
What harm can dental plaque do?
| 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. |
- What are (i) gland A, (ii) substance B, and (iii) enzyme C?
- Name the tube D.
- What is the movement E known as?
- What are (i) F, (ii) G, and (iii) H?
What is roughage? Give two examples.
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
Given alongside is the diagram of the human alimentary canal.
(i) Name the parts 1-11 indicated by guidelines.
1.____ 2.____ 3.____ 4.____ 5.____ 6.____ 7.____ 8.____ 9.____ 10.___ 11.____
(ii) State the function of the juice secreted by the part 1.
(iii) State the function of the three enzymes found in the juice secreted by part 3.
Define the following term:
Digestion
Food are classified into three groups on the basis of the function they perform in our body. Name the three categories, and briefly give their functions. Also give their two sources each.
Define with examples: Omnivores
State one difference in nutrition: Holozoic and Saprozoic nutrition
Describe the following: Coagulation of milk in the digestive system.
Name the enzymes secreted by the following: Ileum
How do we know that we are hungry and that we should now eat?
All are functions of the liver, EXCEPT
The contraction and expansion movement of the walls of the food pipe is called ____________.
The exit of unabsorbed food material is regulated by ____________.
Liver transports nutrients, oxygen, wastes, and hormones.
Match the following:
| 1. | Pancreatic juice | a. | Breaking starch |
| 2. | Salivary enzymes | b. | Digestive enzymes |
| 3. | Salivary gland | c. | Alimentary canal |
| 4. | Digestive tract | d. | Parotid |
