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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

Write any three economic importance of algae. - Science

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Question

Write any three economic importance of algae.

Answer in Brief

Solution

  1. Agriculture: Some of the blue-green algae are essential for the fixing of atmospheric nitrogen into the soil, which increases the fertility of the soil, for example, Nostoc, Anabaena.

     

  2. Agar-Agar: Agar Agar is extracted from some red algae, namely Gelidium, Gracillaria, etc., which is used to prepare growth medium in laboratories.

     

  3. Iodine: Iodine is obtained from brown algae like Laminaria (kelp).

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Chapter 17: Plant Kingdom - Exercises [Page 203]

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Samacheer Kalvi Science [English] Class 8 TN Board
Chapter 17 Plant Kingdom
Exercises | Q VI. 2. | Page 203
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