NCERT Solutions for Class 10 Science Nutrition Notes
NCERT Solutions for Class 10 Science : Takshila Learning offers Class 10th Science in one of the simplest, easiest and most convenient options for the students. Online classes for Class 10 Science covers all topics with easily accessible notes, can help students gain knowledge at their home at their own pace and convenience. We also bring some theoretical knowledge in the form of these blogs and articles. This article carries detailed information about ‘Nutrition and Modes of Nutrition’ from the Biology section of 10th class science.
- The organism needs energy for the biological functions. Energy obtained from the oxidation of food items.
- The essential nutrients for the production of the organism are also derived from food.
- Food consumed by living beings cannot come directly to the body. Therefore digestion, absorption, and digestion after digestion become dignified in the biogenesis of the cells. This whole process is called nutrition.
Now we can say that nutrition is needed to provide energy for doing any activity and provide essential nutrients for life processes.
In our daily life, there are many activities done by human beings. From the early morning to the night we are busy in doing these activities like jogging, eating, cycling, etc; even when we are sleeping at that time also activities going on (watching dream, moving our hands, legs etc)
What is nutrient?
A nutrient is a component in foods that an organism uses to survive and grow. Such as Carbohydrates, Fats, Vitamins, Proteins, and Minerals, these nutrients are very important for our body. We cannot even live without these elements.
So here a question arises, from where we get these elements?
We get this nutrient from Food like vegetable drinks etc.
Carbohydrate and fats supply energy.
Vitamin, protein, and minerals are needed for making body parts like skin, blood bones etc.
MODES OF NUTRITION
Modes of nutrition mean methods of procuring food or obtaining food by an organism.
All living beings need food. Green plants create their food by photosynthesis, so green plants are called producers or Autotrophs. All animals directly or indirectly obtain their food from plants, so they are called consumers or Heterotrophs.
There are mainly two modes of nutrition found:
1. Autotrophic mode of nutrition
2. Heterotrophic mode of nutrition
- The organisms who make their own food themselves are called Autotrophs. Green plants are autotrophic. They produce their organic food items in the presence of carbon dioxide and water from Fahrenheit and sunlight. In the photosynthesis process, glucose is formed and oxygen is released. Free O2 purifies the atmosphere.
- Due to photosynthesis, glucose carbohydrates, fat proteins, vitamins etc. become accumulated in different parts of the plant, due to the synthesis. During the photosynthesis process, light energy gets accumulated in the form of chemical energy in organic matter.
- At the time of the respiratory process, chemical energy is transformed into kinetic energy and it is used for biological processes. Foliage is found in Euglena. It is the only animal that makes its food in the presence of light itself and at night receives food from the holozoic method.
- In some photosynthetic bacteria, the photosynthetic pigment is found similar to fennel. These bacteria use hydrogen sulphide (H2O) gas instead of water for the production of food.
Some chemical synthetic bacteria synthesize the food items for themselves by using chemical energy, such as sulfur bacteria, iron bacteria, hydrogen bacteria etc.
Such organisms who cannot make their own food, are called Heterotrophs; like – all the creatures ( Euglena is the exception) and the leafless plant. Heterogeneous organisms receive food from plants directly or indirectly. Vegetarian animals receive their food directly from plants, carnivorous animals get food from vegetarian animals. Herpetic is mainly of the following types:
a) Sprozoic– Foliage, bacteria, etc., such as leafless plants, fall in this category. They get their food from dead organic matter. They decompose dead animals and plant bodies. As a result, the bio-chemical cycle keeps the cycle of nutrients intact.
Organism derived food from the body of another organism (host) without killing it, ex- plasmodium, roundworm, fungi, some bacteria, cascuta (plant).
Organism takes complete food material in the body and follows ingestion, digestion, absorption, assimilation etc.
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