Why us a spirogyra called a thallus ? which types of nutrition does it show ?why?​

Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells. They can form masses that float near the surface of streams and ponds, buoyed by oxygen bubbles released during photosynthesis.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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