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In Cyanobacteria,

Colonies surrounded by gelatinous sheath.

pls explain colonies and Gelatinous sheath.

  • Individual cyanobacteria are a single cell. Some types of cyanobacteria grow in colonies, that is, they get together.
  • Gelatinous sheath is the layer which is the outer most part compared to others. This sheath is also known as mucilaginous. You may refer to the picture given in NCERT book for easy understanding.

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 In biology, a colony refers to individual organisms of the same species living closely together, usually for mutual benefit, such as stronger defense or the ability to attack bigger prey. Some insects (ants and honey bees, for example) live only in colonies.

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