Life processes class 10th science

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 What are life processes?

A number of processes are essential for maintenance of life. These processes are called life processes.

• Every organism require energy for the various maintenance processes. This energy is provided by food. So, a process is required to intake food & convert it into simpler forms which can be absorbed by body. This process is called nutrition.
 • A process is also required to obtain energy from the simpler food forms present in each cell. This is done by the process called respiration.
In which organisms obtain Oxygen from outside & utilize it to break down food substances for cellular needs along with the release of carbon dioxide.
Respiration is oxidation reaction.

• Process is required to transport these substances from one part of the body to other. This takes place by the process called transportation & the system involved in the process called Transportation process.

• A number of metabolic reactions occur in the various parts of the body. These reactions produce a number of by products. These by products are not only useless but can also be harmful to the organism. Hence, these products need to be removed from the body & discarded outside by a process called excretion. And the system involved in the process is the excretory system.

NUTRITION:

The process of taking in food utilising it for various activities is called Nutrition.

A nutrient is an organic or inorganic substance required for the maintenance of life & survival of living organisms.

Modes of Nutrition:
1. Autotrophic Nutrition
2. Heterotrophic Nutrition


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