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प्रश्न
Name different steps involved in animal nutrition. Explain.
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उत्तर
The steps involved in animal nutrition are:
- Ingestion - It means taking solid or liquid food inside the body.
- Digestion - It is the breaking down of complex insoluble food components into simple soluble substances.
- Absorption - It is the process by which soluble soluble digested food passes from alimentary canal into blood and lymph through intestinal villi.
- Assimilation - Utilization of absorbed food by different body cells is called assimilation.
- Egestion - Elimination of undigested food as faeces is called egestion.
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संबंधित प्रश्न
The largest gland in the human body is ______.
Name the biological catalysts which bring about chemical digestion of food.
What is trypsin?
How do carbohydrates get digested in human beings?
In human digestive system, bile is secreted by ______.
The first enzyme to mix with food in the digestive tract is ______.
| 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?
Gastric juice contains
Define the following term:
Kilocalorie
Give Scientific reasons:
Consuming iodized salt in day to day diet is essential.
Put a tick (✓) against the most appropriate alternative in the following statement.
The hardest substance in your body?
Define the following term:
Egestion
State the four ways in which saliva is useful to us.
State one difference in nutrition: Holozoic and Saprozoic nutrition
Correct the spellings: Carboxytipepdase
The question has four options. Choose the correct answer:
Stomach in vertebrates is the chief site of digestion of
Match the two columns and select correct option.
| Column - I | Column - II | ||
| i. | Sphincter of Oddi | a. | Oesophagus and stomach |
| ii. |
Ileo-caecal sphincter |
b. | Stomach and small intestine |
| iii. | Pyloric sphincter | c | Ileum and caecum |
| iv. |
Gastro-oesophageal sphincter |
d. | Opening of hepato- pancreatic duct |
Observe the diagram of Human digestive system.
Match the labeling referred in column I and correlate with the function in column II.
| Column I | Column II | |
| i. | a. | The length of this depends on food the organism eats. |
| ii. | b. | Initial phase of starch digestion |
| iii. | c. | Increase the efficiency of lipase enzyme action |
| iv. | d. | This is the site of the complete digestion of carbohydrates, proteins and fats. |
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
What is chyme?
