EASY
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Which are the accessory pigments in photosynthesis?

Important Questions on Photosynthesis in Higher Plants

EASY
Choose the correct statements among the following.
A) Chlorophyll is the major pigment responsible for the trapping of light, accessory pigments also participate
B) In green plants, H2O is the hydrogen donor
C) In purple sulfur bacteria the oxidation product is carbon
D) Radioisotope studies proved water as a source of O2 release in photosynthesis.
EASY
If a pure chlorophyll solution is illuminated with ultraviolet light, the solution appears:
EASY
Which one of the following is NOT a role of accessory pigments?
MEDIUM

Assertion (A): Chromatographic separation of leaf pigments shows that leaves has four different pigments.

Reason (R): Pigments absorb light at specific wavelengths and help in the process of photosynthesis. The major leaf pigments are chlorophyll-a, chlorophyll-b, xanthophylls and carotenoids. 

The correct option among the following is:

MEDIUM
Who stated that green substance (chlorophyll), located in the special organelle (chloroplast) of plant cells produces glucose?
MEDIUM

The graph below represents the absorption spectrum of a major pigment contributing to photosynthesis.

Question Image
Which one of the following best represents the photosynthetic efficiency of the pigment?

EASY
With the help of a suitable diagrammatic representation explain HSK pathway.
MEDIUM
Suppose there were plants that had a high concentration of Chlorophyll b but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?
EASY
What is the advantage of having more than one pigment molecule in a photo center?
EASY
In blue-green algae, photosystem-II contains important pigment concerned with photolysis of water. It is 
EASY
Isolated chlorophyll-a in pure form emits red colour. This phenomenon is called as 
EASY
Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?
MEDIUM
What is the difference between chlorophyll a and chlorophyll b?
EASY
The red absorbing form of phytochrome gets converted to the far–red absorbing form after getting irradiated at
EASY
The brown colour of some algae is due to the presence of pigments
EASY
The approximate dimension of chlorophyll porphyrin ring is
MEDIUM
Mention the advantages of having more than one pigment molecule in photocenter.
MEDIUM
Why does chlorophyll appear green in transmitted light and red in reflected light?
EASY
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?