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प्रश्न
Explain the process of nutrition in Amoeba.
उत्तर
Amoeba shows holozoic nutrition which comprises Ingestion, Digestion, Absorption, Assimilation and Egestion.
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Ingestion : Amoeba traps food particles through fingerlike projections called pseudopodia. Pseudopodia present outside its body and helps in taking food along with water.
- Digestion : Food vacuoles are made after ingesting the food. Enzymes are released in the food vacuole for digestion.
- Absorption : After digestion, nutrients enter the cytoplasm through osmosis.
- Assimilation : Nutrients are utilized by the cell for various purposes.
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Egestion : Food vacuole goes near the cell membrane to empty its contents outside the cell. This results in the expulsion of waste materials from the cell.
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संबंधित प्रश्न
Distinguish between the following:
Herbivore and Carnivore
Spot the following in the table of vitamins and minerals.
Foods required to prevent the above diseases.
Pulses are a very good source of ______.
Classify according to food-type.
Deer
Classify according to food-type.
Lion
Short Answer Type Questions:
A patient had stunted growth, swelling on the face, discolouration of hair, and skin disease. The doctor advised him to eat a lot of pulses, grams, egg white, milk, etc. What is wrong with the patient? Explain.
Match the Column I with Column II and choose the correct option.
| Column I (Food componets) | Column II (Gross calorific value) | ||
| i. | Proteins | a. | 9.45 Kcal/g |
| ii. | Carbohy drates | b. | 4.1 Kcal/g |
| iii. | Fats | c. | 5.65 Kcal/g |
Which is the first enzyme to mix with food in the digestive tract?
Is ‘nutrition’ a necessity for an organism? Discuss.
Paheli avoids eating vegetables but likes to eat biscuits, noodles and white bread. She frequently complains of stomach ache and constipation. What are the food items that she should include in her diet to get rid of the problem? Give reason for your answer.
