Question

what are the different mode of nutrition in plan explain any one types ​

Answer 1

Answer:

Holozoic mode

Saprophytic mode

Parasitic mode

Explanation:

Parasitic mode--which depends on host for food

Answer 2

hey....

Answer:

There are two types of modes of nutrition in plants. They are:

1) Autotrophic

2) Heterotrophic

Explanation:

Autotrophic mode of nutrition

In autotrophic mode of nutrition organisms make their own food with the help of simple inorganic materials like carbon dioxide and water, in the presence of sunlight. Also in this nutrition organic food is made from inorganic materials.

Green plants have autotrophic mode of nutrition. These organisms are called autotrophs. The autotrophs have green pigments called chlorophyll which help in trapping sunlight energy. They use the sunlight to make food by the process of photosynthesis. The food produced by autotrophs is used by human beings and animals as well.

Nutrition in Plants

Green plants synthesize their own food by the process of photosynthesis. Photo means light and synthesis means to build, so photosynthesis means ‘building up by light. It is in the presence of chlorophyll that plants use energy of sunlight to make food from inorganic materials like carbon dioxide and water.

Green plants make their own food by photosynthesis

Chlorophyll is present in green coloured bodies called chloroplast. The leaves of a plant are green due to the presence of chlorophyll in them.

In the process of photosynthesis a lot of oxygen gas is released. Let us understand with the help of equation:

Food is prepared in the green leaves of the plant. Plant requires carbon dioxide to make food which it takes from air. The carbon dioxide enters the leaves through tiny pores in them called stomata. Water required to make food is taken from soil. This water is transported to the leaves through roots and stem. The sunlight provides energy to carry out chemical reactions and chlorophyll present in green leaves help in absorbing this energy. Oxygen produced as a by-product in this process which goes out in the air.

The food prepared by the leaves is in the form of simple sugar called glucose. This glucose is then sent to other parts of the plant. The extra glucose is stored in the leaves of the plant in the form of starch. Glucose and starch belong to a category called carbohydrates. Thus green plants convert sunlight energy into chemical energy.

The steps for photosynthesis are:

i) Sunlight energy is absorbed by chlorophyll.

ii) Sunlight energy is converted into chemical energy and water is split into hydrogen and oxygen.

iii) Carbon dioxide is reduced to hydrogen so that carbohydrate like glucose is formed.

It is not necessary that these steps of photosynthesis take place one after the other.

Conditions Necessary for Photosynthesis

Following are the conditions necessary for photosynthesis:

1) Sunlight

2) Chlorophyll

3) Carbon Dioxide

4) Water

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