The areas of the spectrum that drive photosynthesis are highest in the
red end (600-700 nm)
, followed by the blue region (400-500 nm) and lastly, the green region (500-600 nm).
What wavelength of light is most effective in driving photosynthesis explain your answer in 1 2 complete sentences?
An action spectrum plots the rate of photosynthesis at various wavelengths of visible light, and it shows that blue light with a wavelength of
about 490 nm
is effective in driving photosynthesis.
Which wavelengths of light drive the highest rate of photosynthesis select the two best answers?
*Which wavelengths of light drive the highest rates of photosynthesis? Select the two best answers.
Light in the violet-blue and red portions of the spectrum
is most effective in driving photosynthesis.
Which wavelength of light is best absorbed by chlorophyll A?
Chlorophyll a absorbs
violet and orange light
the most. Chlorophyll b absorbs mostly blue and yellow light. They both also absorb light of other wavelengths with less intensity.
Which wavelengths are most effective for photosynthesis least effective?
Green light
is considered the least efficient wavelength in the visible spectrum for photosynthesis, but it is still useful in photosynthesis and regulates plant architecture. Sometimes one may hear that plants don't use green light for photosynthesis, they reflect it.
Which wavelength of light is best absorbed by photosystem 2?
The chlorophyll a special pairs of the two photosystems absorb different wavelengths of light. The PSII special pair absorbs best at
680 nm
, while the PSI special absorbs best at 700 nm.
Why do plants absorb red and blue light?
12. Short answer: plant absorbs mostly “blue” and “red” light. … To do this,
plants have pigment molecules which absorb the energy of light very well
. The pigment responsible for Page 7 most light-harvesting by plants is chlorophyll, a green pigment.
What light does a 430nm pigment absorb?
– A 430nm pigment likely absorbs
blue light
.
What wavelength of light is most effective in driving photosynthesis quizlet?
An action spectrum plots the rate of photosynthesis at various wavelengths of visible light, and it shows that blue light with a wavelength of
about 490 nm
is effective in driving photosynthesis.
What are photosystem 1 and 2?
Photosystem I (PS I) and photosystem II (PS II) are
two multi-subunit membrane-protein complexes involved in oxygenic photosynthesis
. Chlorophyll is the pigment involved in capturing light energy. PS 1 contains chlorophyll B, chlorophyll A-670, Chlorophyll A-680, chlorophyll A-695, chlorophyll A-700 and carotenoids.
Which wavelength of light is best absorbed?
Special pigments in chloroplasts of plant cells absorb the energy of certain wavelengths of light, causing a molecular chain reaction known as the light-dependent reactions of photosynthesis. The best wavelengths of visible light for photosynthesis fall within the
blue range (425–450 nm)
and red range (600–700 nm).
What color is not absorbed by this pigment?
As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum.
Green light
is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.
What absorbs more light?
The more light the object absorbs, the more heat absorbed since light is energy. If you consider it a color,
black
absorbs the most heat. A black object absorbs all wavelengths of light and reflects none. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.
Which light range is most effective in photosynthesis a blue B green C red D Violet?
Red light
is more effective in photosynthesis because both the photosystems (PS I and PS II) absorb light of wavelengths in the red region (680 and 700 nm, respectively). Furthermore, blue light is absorbed by carotenoids, which pass the energy to the chlorophyll.
Which light range is least effective in photosynthesis a blue B green C red D Violet?
Blue and red regions of the light spectrum are most effective in photosynthesis. Blue wavelengths of light carry more energy while red wavelengths have lesser energy. Therefore, the most efficient wavelengths of light efffective in photosynthesis are those of red light.
Green light
is least effective in photosynthesis.
Why is blue light best for photosynthesis?
BLUE LIGHT AND PLANT GROWTH
In addition, blue light regulates the opening of stomata, which are the tiny openings on leaves that control both water loss and the uptake of carbon dioxide. Generally, only
a low intensity of blue
is needed in a light spectrum for fully functional photosynthesis.
