PLANT PHYSIOLOGY
PLANT GROWTH
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
red and blue areas of the spectrum
|
|
|
*blue-green spectrum
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Chlorophyll absorbs all colors present in VIBGYOR except the green color. The highest absorption occurs in violet-blue and red regions of visible light. Pigment chlorophyll is present in the chloroplast of the cells.
Detailed explanation-2: -In plants, chlorophyll a and chlorophyll b are the main photosynthetic pigments. Chlorophyll molecules absorb blue and red wavelengths, as shown by the peaks in the absorption spectra above.
Detailed explanation-3: -Chlorophyll a is the most abundant pigment in plants. Chlorophyll a absorbs light mostly 430nm (blue) and 662nm (red) wavelength light. It reflects green light so it appears green to us.
Detailed explanation-4: -Chlorophyll a absorbs light in the blue-violet region, while chlorophyll b absorbs red-blue light. Neither a or b absorb green light; because green is reflected or transmitted, chlorophyll appears green.
Detailed explanation-5: -The absorption spectrum of chlorophyll is in the visible range from 400 to 700nm. This begins with the 400nm meter region where the light is blue to the 700nm region, where the light is red. The absorption spectrum for chlorophyll can also be called the blue-red spectrum. Therefore, the correct answer is option B.