Question

Describe the structure and functions of heterocysts of blue green algae

Answer 1

Heterocysts are present in various species of filamentous blue‐green algae.

Explanation:

• The size of cells are "slightly bigger" and with a more "thickened wall" than the "vegetative cells".
• Unique glycolipids and an acyl lipid, not present in the vegetative cells of the algae or other plant cells, are associated with the heterocyst.

Their function in akinete formation is given by:

1. The deployment of akinetes adjacent to the heterocysts.
2. Stopping of "sporulation" by separation of the heterocysts from the vegetative cells "(potential akinetes)".

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Answer 2

Structure and functions of heterocysts of blue green algae:

• The structure of the heterocysts of the blue green algae is slightly bigger with thickened wall in comparison the vegetative cells. 'Unique glycolipids' and an 'acyl lipid' is associated with the heterocysts.
• The major role of the heterocysts is it helps the green algae for nitrogen fixation. The function of the heterocyst is it takes part in the nitrogen fixation during aerobic respiration.
• The mature heterocysts do not have functional photostream II and they are not able to produce oxygen.

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