Question

How do plants make their food? What Is this process called?​

Answer 1

Answer:

Explanation:

Plants are not parasitic in nature. They produce their own food with the help of their growth and nutrition. Plants make their own food by a process called Photosynthesis.

Answer 2

Plants prepare their food with the help of water and carbon dioxide in the presence of sunlight and chlorophyll. This process is known as Photosynthesis.

More About Photosynthesis:-

The process of Photosynthesis mainly consists of two phases:-

• Light Phase (Photochemical Phase)
• Dark Phase (Light independent Phase)

Light Phase:-

It consists of two processes:-

• Absorption of light by chlorophyll:- This process takes place in the grana region of chloroplast. Pigment chlorophyll absorbs visible light energy in the form of quanta or photons.
• Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. The decomposition of water into hydrogen and oxygen by light energy (absorbed by chlorophyll) is called photolysis of water.

Dark Phase:-

• Reduction of carbon dioxide to carbohydrate:- Here carbon is reduced to glucose (carbohydrate) by the hydrogen of NADPH (Nicotinamide Adenine Dinucleotide Phosphate) and by utilising of chemical energy stored on ATP (Adenosine Triphosphate). Dark reaction take place in stroma region of chloroplasts. Melvin Calvin gave the details of this process using radioactive carbon. It is also called Calvin Cycle.

Photosynthetic Pigments:-

• Chlorophyll :- The green coloured pigments which help in trapping light energy from sun.
• Carotenoids:- These are classified into two groups:-

1. Carotenes :- They are orange red in color and were isolated from carrot.
2. Xanthophylls :- They are yellow in color.

Carotenoids absorb light energy and transfer it to Chlorophyll and thus act as accessory pigments.