Differences between Algae and Cyanobacteria

  • Green algae singular ‘alga’ refers to any green color algae have photosynthetic capability, found in fresh water habitat.
  • They are eukaryotic organisms.
  • Algal body are consists of membrane- bound organelles.
  • It contains one or more chloroplast per cell.
  • Algae do not involve in nitrogen fixation.
  • It can reproduce their offspring by sexually or asexually.
  • They have less ability to store nutrients in their cell body.
  • Algae usually contain a nucleus and mitochondria.
  • Green algae are symbiotic in character, which means they can produce lichen symbiotically with fungi in a form of symbiosis
  • Chlamydomonas, Spirogyra, Chlorella and green seaweeds are examples of algae.

  • Cyanobacteria is considered as any kind of photosynthetic bacteria that exhibit filamentous structure, sheets and also spheres to form colonies and found in diverse environments.
  • They are Prokaryotic microorganisms.
  • Their cell body are not consists of membrane –bound organelles.
  • They do not contain chloroplasts so cannot produce their own food.
  • They are significantly Involve in nitrogen fixation.
  • Cyanobacteria reproduce asexually by the process of binary fission and develop their progeny. They also can reproduce by fragmentation or spore formation.
  • They have the ability to efficient storage of nutrients.
  • There is a lack a nucleus and mitochondria in the cell of Cyanobacteria
  • Based on their sub-species their positive or negative activities are determined
  •  Nostoc, Anabaena and spirulna are the examples of Cyanobacteria

Written by:
Md. Rayhan Mahmud
Admin of Microbial World

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