Kingdom Monera Features · NCERT Biology

The colonies of cyanobacteria are generally surrounded by a:

  1. Calcium carbonate shell
  2. Gelatinous sheath
  3. Siliceous frustule
  4. Chitinous layer
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Correct answer: Gelatinous sheath

Cyanobacteria often form blooms in polluted water bodies. Their colonies are typically encased in a mucilaginous or gelatinous sheath which helps in buoyancy and protection.

Difficulty: Medium Question 15 of 20

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