give reason plant body of Spirogyra is thalloid
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Answer:
The vegetative structure or plant body is known as thallus. Thallus is a unbranched multicellular filamentous structure formed by arrangement of cylindrical cells head to head in a single row.
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Explanation:
A structure or organism that represents a thallus is known as thalloid. Thallus is the undifferentiated ‘vegetative tissue’ of some organisms belonging to the group of algae, fungi, lichens, liverworts, etc. Spirogyra is a free-floating ‘green algae’ with a long filamentous body structure.
This vegetative structure of Spirogyra is unbranched, multicellular, made of mononucleated cells cylindrically joined end-to-end. It is because of this structure that Spirogyra plant body is a thalloid.
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