Question

Name the constituent of air which is essential for photosynthesis.

Answer 1

Carbon dioxide is the constituent of air essential for photosynthesis.

Photosynthesis- The process by which plants use carbon dioxide and water to form sugar(carbohydrate) and oxygen in the presence of sunlight.

$\mathrm{Carbon}\mathrm{dioxide}\left(\mathrm{g}\right)+\mathrm{Water}\left(\mathrm{l}\right)\stackrel{\mathrm{sunlight}}{\to }\mathrm{Glucose}\left(\mathrm{s}\right)+\mathrm{Oxygen}\left(\mathrm{g}\right)$

Important points about photosynthesis -

1. The process takes place in leaves and other parts of plants containing chlorophyll.
2. The process takes place during the day only.