Algae: Classification and Characteristics · NCERT Biology

Isogamous reproduction with non-flagellated (non-motile) gametes is found in:

  1. Spirogyra
  2. Ulothrix
  3. Volvox
  4. Fucus
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Correct answer: Spirogyra

Spirogyra exhibits isogamy where both gametes are similar in size but lack flagella. In Ulothrix, the isogamous gametes are flagellated.

Difficulty: Medium Question 6 of 20

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