Spirogyra differs from moss protonema in having [BHU 1991]
A) Pyrenoid
B) Branched filament
C) Discoid chloroplast
D) Rhizoidal branches
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The correct answer is option A- Pyrenoids
Spirogyra differs from moss-protonema in having pyrenoids. Pyrenoids are small specialized bodies which store starch in them. They are sub-cellular micro compartments found in the chloroplast of many algae including Spirogyra.
Pyrnoids are associated with the carbon-concentrating mechanism. They perform a role in carbon-fixation.
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