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Question: Answered & Verified by Expert
Algae are useful because they
BiologyPlant KingdomAIIMSAIIMS 2002
Options:
  • A are large in number
  • B are used in alcoholic fermentation
  • C purify the atmosphere
  • D are used in curdling of milk.
Solution:
2274 Upvotes Verified Answer
The correct answer is: purify the atmosphere
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.

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