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What are the major function of the chroplast during photosynthesis?
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What are the major function of the chroplast during photosynthesis?
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What are the major function of the chloroplast during photosynthesis?
Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. By doing so, they sustain life on Earth.
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1. GUARD CELLS
-regulate the opening and closing of stomata
Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. ... In figure B, the guard cells have lost water, which causes the cells to become flaccid and the stomatal opening to close. This may occur when the plant has lost an excessive amount of water.
2. THYLAKOID
-stacked,disc-shaped structure
Within the chloroplast is a third membrane that forms stacked, disc-shaped structures called thylakoids.
3. STOMATA
- used for gaseous exchange
The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
4. CHLOROPHYLL
- a light absorbing pigment
Chlorophyll a is the only light-absorbing pigment in reaction centers. Associated with each reaction center are multiple light-harvesting complexes (LHCs), which contain chlorophylls a and b, carotenoids, and other pigments that absorb light at multiple wavelengths.
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4. CHLOROPLAST
- where photosynthesis occur
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.