Question
Mention the distinctive characters of cyanobacteria.
✓
Answer
Cyanobacteria:
- They are unicellular, colonial or form trichomes.
- The colonies are surrounded by a gelationous sheath.
- They have chlorophylla, similar to green plants.
- They are photosynthetic autotrophs.
- They have a pigment, c-phycocyanin, that gives them the characteristic blue-green colour.
- Some of them can fix atmospheric nitrogen in the specialised cells, called heterocysts.
- They show vegetative reproduction by fragmentation or cell division.
- No sexual reproduction has been reported. as genetic material.
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