Question

Differentiate between bacteria and cyanobacteria?

Answer 1

1. Bacteria are small single celled organisms, found everywhere on the Earth.
2. Cyanobacteria are an aquatic and photosynthetic form of bacteria.

Attribute	Bacteria	Cyanobacteria
1.Diameter	1.Ranges around 0.5-1 microns.	1. Above 1.0 microns.
2. Locomotion	2. Flagellar movement.	2. Passive and gliding movement.
3. Locomotive structures	3. Flagella	3. Absent
4. Fimbriae/Pili	4. Present	4. Absent
5. Pigmentation	5. Can be present	5. Always present.
6. Extracellular coat	6. Capsule.	6. Gelatinous sheath
7. Protoplast	7. Zonation is not found.	7. Is distinguished as chromoplasm and centroplasm.
8. Photosynthetic pigment	8. Present in green and purple bacteria.	8. Found in all cyanobacteria.