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प्रश्न
In a way green plants and cyanobacteria have synthesized all the food on the earth. Comment.
उत्तर
Cyanobacteria are unicellular prokaryotic organisms. They have photosynthetic pigments like chlorophyll ac, phycocyanin and phycoerythrin. These enable them to produce food by themselves. Green plants are multicellular organisms capable of making food by using carbon dioxide, water and light energy. Therefore bacteria and green plants make food for living organisms on earth.
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संबंधित प्रश्न
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?
Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?
The reaction centre of P.S. II is ________.
(A) Chl-a, 700
(B) Chl-a, 680
(C) Chl-a, 673
(D) Chl-a, 650
Leaves appear green because they ______.
Pigment system is concerned with :
Which metal ion is a constituent of chlorophyll?
Which pigment acts directly to convert light energy to chemical energy?
Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)?
Chlorophyll ‘a’ is the primary pigment for light reaction. What are accessory pigments? What is their role in photosynthesis?
What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? At which wavelength do they show peaks?
