find out the mode of nutrition in various organisms along with diagram
Answers
Main modes of nutrition in plants and animals are: 1. Autotrophic nutrition 2. Heterotrophic nutrition!
Plants and animals do not obtain food by the same processes.
Plants and some bacteria have the green pigment chlorophyll to help synthesize food, while animals, fungi and other bacteria depend on other organisms for food.
Based on this, there are two main modes of nutrition: autotrophic and heterotrophic.
1. Autotrophic nutrition:
The term ‘autotroph’ is derived from two Greek words—autos (self) and trophe (nutrition). In autotrophic nutrition, an organism makes its own food from simple raw materials.
Based on this, there are two main modes of nutrition: autotrophic and heterotrophic.
1. Autotrophic nutrition:
The term ‘autotroph’ is derived from two Greek words—autos (self) and trophe (nutrition). In autotrophic nutrition, an organism makes its own food from simple raw materials.
Photosynthesis:
Green plants, which are autotrophic, synthesize food through the process of photosynthesis. Photosynthesis is a process by which green plants, having chlorophyll, synthesize the simple sugar (glucose) from the simple raw materials water and carbon dioxide using the energy of sunlight. Oxygen is released in this process. The overall equation of photosynthesis is
cont in the image
The sugar produced is stored in the form of starch in plants. (In animals food is stored in the form of glycogen.) These food reserves provide energy as and when required by the organism. Since autotrophic plants are able to produce food, they are also known as producers.
Site of Photosynthesis:
Though all green parts of a plant are capable of performing photosynthesis, the leaves are the most suitable organs for this process. The cells of the leaves contain special organelles called chloroplasts, which are the main sites of photosynthesis. These are plastids which contain the light-absorbing green pigment chlorophyll.
Requirements for Photosynthesis:
Photosynthesis requires chlorophyll, carbon dioxide, water and sunlight.
1. Chlorophyll:
Chlorophylls are green pigments found in all photosynthetic organisms and are responsible for their green colour. In plants, chlorophyll is mainly found in the leaves. Young stems and fruits may also have chlorophyll. In lower plants like algae, the whole plant is green and takes part in photosynthesis.
2. Carbon dioxide:
Air contains about 0.03% of carbon dioxide. Terrestrial plants use atmospheric carbon dioxide in photos3mthesis. Aquatic plants use the carbon dioxide dissolved in water. Plants obtain carbon dioxide through pores called stomata present on the surfaces of leaves. The opening and closing of these pores are regulated by guard cells, which surround them.
3. Water:
Water is an important raw material for photosynthesis. Plants absorb water from the soil through their root hairs. The water is then transported up to the leaves through the stem.
4. Sunlight:
Light energy is used in splitting water molecules into hydrogen and oxygen. The splitting of water in the presence of light is called photolysis.
if it is correct plese select it as brainlest question