Short Note on :Anabaena as a biofertilizer

1.	Short Note on :Anabaena as a biofertilizer
Answer» 1. Anabaena is a cyanobacterial biofertilizer. 2. It is multicellular, filamentous nitrogen fixing organism that exits as plankton. 3. It can fix nitrogen both in free living conditions as well as by forming symbiotic associations. 4. Anabaena forms symbiotic relationship with Azolla, Anthoceros and Cycas. 5. It is found in dorsal leaf lobe in Azolla, thallus of Anthoceros and in coralloid roots of Cycas. 6. It has specialized colourless cells known as heterocysts. 7. Heterocysts are the sites for nitrogen fixation.

Answer»

1. Anabaena is a cyanobacterial biofertilizer.

2. It is multicellular, filamentous nitrogen fixing organism that exits as plankton.

3. It can fix nitrogen both in free living conditions as well as by forming symbiotic associations.

4. Anabaena forms symbiotic relationship with Azolla, Anthoceros and Cycas.

5. It is found in dorsal leaf lobe in Azolla, thallus of Anthoceros and in coralloid roots of Cycas.

6. It has specialized colourless cells known as heterocysts.

7. Heterocysts are the sites for nitrogen fixation.

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