Question

life process in full detail in class 10
plz dont copy in net
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Answer 1

Answer:

the basic function performed by living organism to maintain their life on this earth are called life process

following are the life process activity :-

* life process --> metrobolic process

1. nutrition

2. respiration

3. transortation

4. excretion

5. control&coordition

6. reproduction

Explanation:

Answer 2

Answer:

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$\red {Life \: Process}$

• Maintenance of living organism is essential even if they are moving, resting or even sleeping.
• The processes which together perform the function of maintenance of ‘life’ are called as life processes.
• Nutrition, respiration, circulation, excretion are examples of essential life processes.
• In unicellular organisms, all these processes are carried out by that single cell.
• In multicellular organisms, well-developed systems are present to carry out the processes.

$\green {Nutrition}$

The process of acquiring food that is needed for nourishment and sustenance of the organism is called nutrition.

• There are two main modes of nutrition, autotrophic and heterotrophic.
• Heterotrophic nutrition has subtypes as holozoic, saprophytic and parasitic nutrition.

Autotrophic nutrition:-

If an organism can nourish itself by making its own food using sunlight or chemicals such mode of nutrition is called as autotrophic nutrition.

For example: Plants make their own food by the process of photosynthesis.

Heterotrophic nutrition:-

When an organism depends on others for food, such a mode of nutrition is called as a heterotrophic mode of nutrition.

1) Saprotrophic nutrition

**Some organism feed on dead and decaying organic matter. This mode of nutrition is called saprophytic nutrition.

• The food is partially digested outside the body and then it is absorbed.
• E.g. Fungi are saprophytes.

2) Parasitic nutrition

**Some organisms feed on the expense of another organism and in turn causing it harm. This is called parasitic mode of nutrition.

• These organisms live on the body or in the body of a host organism and derive the nutrients directly from the body of the host.
• E.g. Leech is an ectoparasite while Ascaris is an endoparasite. Cuscuta is a parasitic plant.

3) Holozoic mode of nutrition

** The mode of nutrition in which animals take their food as a whole is called as holozoic nutrition.

• In holozoic nutrition, food passes through five steps as ingestion, digestion, absorption, assimilation and egestion.
• Amoeba feeds by holozoic mode of nutrition.
• Paramoecium also exhibits holozoic nutrition.

$\green {Nutrition \: in \: human \: beings}$

• Humans are omnivores, they can eat plant-based food as well as animal-based food.
• Being more complex, humans have a very complicated nutrition system.
• The digestive system has an alimentary canal and associated digestive glands, which together function to nourish the body.
• There are five stages in human nutrition; Ingestion, Digestion, Absorption, Assimilation and Egestion.
• Four stages i.e. ingestion, digestion, absorption and egestion take place in the alimentary canal while assimilation of food takes place in the whole body.

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