nematoblast of obelia
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it helps in Anchorage, food gathering, protect form pray
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Nematoblast of obelia :
- This is a organ of offense and also defense. An obelia is a marine- colonial form which is found attached on the surface of the rocks of the sea weeds or wooden piles or even rocks.
- It forms white or light brownish fur like plant in the sea. It has thread like structure of root called hydrorhiza.
- Its terminal head is called hydranth. It is a feeding polyps, it captures minute creatures and feeds on it.
- The nematoblast is a cell which produces the nematocytes. They are also called as the cnidae. It helps in the food collection, protection from its prey and helps in anchorage.
To know more:
Compare the polyps of metridium and obelia
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Difference between obelia and Aurelia
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