An example of colonial alga is :

1. Volvox

2. Ulothrix

3. Spirogyra

4. Chlorella

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Answer: 1. Volvox

Key idea: Colonial algae have a fixed number of cells living together as one unit.

Volvox forms a spherical colony of many flagellated cells. Ulothrix and Spirogyra are filamentous, and Chlorella is unicellular. Answer: (1).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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