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Question

From which of the following algae, agar is commercially extracted:
(a) Gracilaria
(b) Fucus
(c) Sargassum
(d) Gelidium
(e) Turbinaria


A
a,d
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B
c,e
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C
b,c
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D
d,e
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E
a,b
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Solution

The correct option is B $$a, d$$
  • Agar is extracted from Gracilaria and Gelidium. 
  • Agar is derived from polysaccharide; agarose, present in specific species of these algae. 
  • These algae are known as agarophytes and belong to phylum Rhodophyta. It is a red algae. 
  • The nature of agar is too gelatinous. 
  • Thus, the correct answer is option A. 

Biology

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