Commercial agar is obtained from

A Chlorella
B Gracilaria
C Parphyro
D Volvox

Correct Answer: Gracilaria

The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from tengusa (Gelidiaceae) and ogonori (Gracilaria). For commercial purposes, it is derived primarily from ogonori.
Bissoy MCQ
#General Knowledge #Biology

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