Photosynthesis
- Protochlorophyll differs from chlorophyll in lacking
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Protochlorophyll differs from chlorophyll in lacking 2 hydrogen atoms in one of its pyrrole rings.
Correct Option: A
Protochlorophyll differs from chlorophyll in lacking 2 hydrogen atoms in one of its pyrrole rings.
- Chlorophyll ‘a’ molecule at its carbon atom 3 of the Pyrrole ring II has one of the following
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Chlorophyll a has a methyl group attached to the third carbon, which is replaced by an aldehyde group in chlorophyll b.
Correct Option: B
Chlorophyll a has a methyl group attached to the third carbon, which is replaced by an aldehyde group in chlorophyll b.
- Most plants are green in colour because
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The leaves appear green because of the pigment chlorophyll which does not absorb green light rather reflects it back.
Correct Option: C
The leaves appear green because of the pigment chlorophyll which does not absorb green light rather reflects it back.
- The principle of limiting factors was proposed by
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The principle of limiting factors was formulated by Blackmann (1905). It states that when a process is conditioned as to its rapidity by a number of separate factors, the rate of process is limited by the pace of slowest factor.
Correct Option: A
The principle of limiting factors was formulated by Blackmann (1905). It states that when a process is conditioned as to its rapidity by a number of separate factors, the rate of process is limited by the pace of slowest factor.
- Nine-tenth of all photosynthesis of world (85-90%) is carried out by
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85-90% of all photosynthesis of world is carried out by phytoplanktons in ocean.
Correct Option: B
85-90% of all photosynthesis of world is carried out by phytoplanktons in ocean.
