Photosynthesis Rate and Light Colour
Photosynthesis is the process plants use to convert light energy into chemical energy. The efficiency of this process depends on the wavelength (colour) of the light available.
Understanding Light Absorption by Chlorophyll
Plant pigments, primarily chlorophylls, absorb specific wavelengths of light. Chlorophyll absorbs light most strongly in the blue-violet and orange-red portions of the visible spectrum. It reflects most of the green light, which is why plants appear green.
Peak Photosynthesis Wavelengths
- Blue Light (approx. 430-450 nm): Absorbed well, driving photosynthesis.
- Green Light (approx. 500-560 nm): Mostly reflected, leading to a lower rate of photosynthesis.
- Red Light (approx. 640-660 nm): Absorbed very effectively by chlorophyll, resulting in a high rate of photosynthesis.
Conclusion on Maximum Rate
While both blue and red light support high rates of photosynthesis, red light is often considered optimal or near-optimal, leading to the maximum rate among the common visible light colours due to efficient absorption by chlorophyll.
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Important Questions from Biology
Which of the following statements about living and non-living being is/are correct?
1. While living being can demonstrate growth and repair, non-living being cannot.
2. While living being demonstrates metabolic processes, non-living being does not.
Select the correct answer using the code given below.Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
Transformation of meristematic cells into specific permanent tissues occurs by the process of
