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Biology
Algae are useful because they
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Q. Algae are useful because they
AIIMS
AIIMS 2002
Plant Kingdom
A
are large in number
6%
B
are used in alcoholic fermentation
12%
C
purify the atmosphere
76%
D
are used in curdling of milk
6%
Solution:
Maximum solar energy is trapped by algae and hence they evolve maximum amount of oxygen by the process of photosynthesis. Therefore, algae are useful because they purify the atmosphere by releasing oxygen.