Absorption spectrum of chlorophyll- ‘a’ is shown by-

1. i
2. ii
3. iii
4. Not shown.

How many pigments are responsible for the color of a plant leaf?
1. 1
2. 2
3. 3
4. 4

After performing the chromatographic separation of a plant leaf, experimentor found bright or blue green colour in the chromatogram. Then this pigment should be-
1. xanthophyll
2. carotenoid
3. chlorophyll a
4. chlorophyll b

Range of wavelength at which chlorophyll a shows the maximum absorption is:
1. 400-450 nm
2. 450-500 nm
3. 650-700nm
4. 500-600nm

Which of the following is the chief pigment associated with photosynthesis?
1. chl-a
2. chl-b
3.chl- a and xanthophylls
4.chl-a and carotenoids

Which regions of the visible spectrum are responsible for most of the photosynthesis?
1. blue and yellow
2. blue and red
3. blue and green
4. green and red

How statements are correct?
i. chlorophyll-a , xanthophylls and carotenoids are called as accessory pigments.
ii. accessory pigments protect chlorophyll-a from photo-oxidation.
iii.chlorophylla are the major pigments responsible for trapping of light
iv. chl-a and chl-b forms the reaction centre
v. chl-a transfers the energy to accessory pigments.
1. 2
2. 3
3. 4
4. 5

Photochemical phase does not include-
1. water splitting
2. oxygen release
3. CO₂ assimilation
4. light absorption

Which of the following statement is incorrect?

In photosystem-I, P700 refers to-