Question

what is photosynthesis ?​

Answer 1

Answer:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and make their own food.

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Answer 2

Explanation:

The process in which green plant synthesis their food like glucose from CO2 (Carbon dioxide) and H2O (water) in the presence of sunlight with the help of chlorophyll.

$\sf{6CO_{2} + 12H_{2}O}$ (in the presence of light and chlorophyll) → $\sf{C_{6}H_{12}O_{5} (glucose) + 6H_{2}O + 6O_{2}}$

Necessary things for photosynthesis: Carbon dioxide, water, chlorophyll and sunlight.

• Terrestrial plants take CO2 from atmosphere while aquatic plants use CO2 dissolved in water.

• Photosynthesis convert light energy into chemical energy.

• The stages of photosynthesis:

1. Photochemical reaction or light reaction
2. Dark chemical reaction

• Chlorophyll absorb the violet, blue and red colors of light.

• Most common type of chlorophyll that found in plants are chlorophyll 'a' and 'b'.

• Water is necessary for photosynthesis and is absorbed by the roots of the plants.

• Oxygen that is produced during photosynthesis is because of photolysis of water.

• Through osmosis, water enters into the cells of leaves.