Question

List the three events that occur during the process of photosynthesis. Explain the role of stomata in this process

Answer 1

Photosynthesis:

1. Photosynthesis is the conversion of light energy into chemical energy by photosynthetic organisms, which are used to power cell activity.
2. Sugar, formed from water and carbon dioxide, stores chemical energy.

The three episodes that occur during the photosynthesis cycle are:

1. Light energy is absorbed by chlorophyll, which breaks down water molecules into oxygen and hydrogen.
2. Light energy is converted into chemical energy. The reduction of carbon dioxide leads to the formation of carbohydrates.
3. Plants absorb carbon dioxide from the atmosphere through the stomata and then enter the photosynthetic cycle of Calvin. The pores enable gas interchange.

Main functions of stomata:

1. Opening and closing stomata assist in gas exchange between the plant and the environment.
2. Supports transpiration and removal of excess water as water vapor.
3. At night, the pores close to prevent water from leaking through the pores.
4. The pores assist absorb carbon dioxide and discharging oxygen during photosynthesis.