MCQ
Agar agar is derived from:
- AA fungi
- BAn alga
- CBoth A and B
- DA bryophyte
Explanation:
Agar is derived from polysaccharide agarose present in specific species of algae.
These algae are known as agarophytes and belong to phylum Rhodophyta. It is a red algae.
The nature of agar is gelatinous.
The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from the genera Gelidium and Gracilaria.
For commercial purposes, it is derived primarily from Gelidium amansii. In chemical terms, agar is a polymer made up of subunits of the sugar galactose.
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$\begin{array}{|l|l|} \hline Column\,\,I & Column\,\,II \\ \hline A.\,\,Physallia & 1.\,\,Liver\,\,fluke \\ \hline B.\,\,Taenia & 2.\,\,Sycon \\ \hline C.\,\,Fasciola & 3.\,\,Tape\,\,worm \\ \hline D.\,\,Scypha & 4.\,\,Portugese\,\,man\,\,of\,\,war \\ \hline \end{array}$
$A\ \ B\ \ C\ \ D$