Which of the following algal species is the source of agar?
A
Laminaria
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B
Gracilaria
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C
Chlorella
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D
Sargassum
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Solution
The correct option is B Gracilaria The Agar is obtained from several members of red algae such as Gracilaria, Gelidium, Chondrus etc. Agar gels are extensively used for growing microorganisms, and in preparation of ice cream and jellies.