Algal Forms and Classification — NEET Biology
✅ Asked in NEET 2017The form and size of algae is highly variable, ranging from colonial forms like Volvox and the filamentous forms like Ulothrix and Spirogyra. A few of the marine forms such as kelps, form massive plant bodies.
NTA tests this concept to check if students understand the diversity of algal body structures, particularly that Volvox is a colonial form (not unicellular), while Ulothrix and Spirogyra are filamentous forms. Students often confuse Volvox as a simple unicellular organism or mistake its colonial nature. The key trap is not recognizing that colonial forms involve many cells organized together, distinct from truly unicellular algae. Remember: colonial (Volvox) = multiple cells in a loose colony, filamentous (Ulothrix, Spirogyra) = cells joined end-to-end in threads, and some marine algae form massive bodies (kelps). This tests basic algal taxonomy essential for plant kingdom classification.
An example of colonial alga is: (NEET 2017)
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