Question

Name the cell organelles concerned with trapping of solar energy.

Answer 1

Chloroplast:

1. Chloroplast is the organelle responsible for trapping solar energy.
2. It is also the site of photosynthesis.
3. The number of chloroplast ranges from 20 to 40 in plants.
4. It has a double membrane envelope.
5. The chloroplast is filled with a matrix called the stroma.
6. It is a gel-like fluid in which the granum is embedded.
7. Granum is made up of a stack of thylakoids.
8. In thylakoids, light reaction takes place.
9. Solar energy is absorbed by the thylakoid membranes and converted into ATP and NADPH molecules.
10. The converted molecules are used in dark reactions.
11. A dark reaction takes place in the stroma.
12. The reducing power of NADPH and the energy of ATP is utilized for the conversion of carbon dioxide into carbohydrate.
13. The carbohydrate produced is then transported throughout the plant by phloem.