How many statements are correct?
i. Products of dark reaction are substrates of light reaction
ii. Products of light reaction are substrates of dark reaction
iii. In stroma, enzymatic reactions incorporate CO2 into the plant leading to the synthesis of sugar
iv. dark reactions are light independent
v. chloroplast is single membranous organelle.
a. 2
b. 3
c.4
d.1

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Products of light reaction does not include-
a. ATP & NADPH
b. CO2
c. O2
d. Electrons

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


a. i
b. ii
c. iii
d. Not shown.

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

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

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Range of wavelength at which chlorophyll-a shows the maximum absorption:
a. 400-450 nm
b. 450-500 nm
c. 650-700 nm
d. 500-600 nm.

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Which of the following is the chief pigment associated with photosynthesis?
a. chl-a
b. chl-b
c. chl- a and xanthophylls
d. chl-a and carotenoids

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Which regions of the visible spectrum are responsible for most of the photosynthesis?
a. blue and yellow
b. blue and red
c. blue and green
d. green and red

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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.
a. 2
b. 3
c. 4
d. 5

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Photochemical phase does not include-
a. water splitting
b. oxygen release
c. CO2 assimilation
d. light absorption

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Difficulty Level: