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Question
Why do living organisms need nutrition?
Solution
Nutrition is the process of uptake of nutrients from food and utilizing them for various functions of the cells. Nutrition is required for purposes like:
- supplying the energy required for doing work
- for growth and development of the body
- to fight diseases
- to replace the damaged cells and repair tissues
RELATED QUESTIONS
Spot the following in the table of vitamins and minerals.
The nutrient present in citrous fruits.
Pulses are a very good source of ______.
Explain the various steps of nutrition in animals.
Short Answer Type Questions:
Name the vitamin that our body prepares in the presence of sunlight.
What is obesity?
Name the following:
The nutrients which mainly give energy to our body.
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 of the following statements is/are correct?
- All green plants can prepare their own food.
- Most animals are autotrophs.
- Carbon dioxide is not required for photosynthesis.
- Oxygen is liberated during photosynthesis.
Choose the correct answer from the options below:
‘Water does not provide nutrients, yet it is an important component of food’. Explain.
