Heliozoans - protozoan, Biology

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Heliozoans - Protozoan

Heliozoans are spherical protozoan that occur in the sea or in still bodies of fresh water. They are mainly located in the bottom debris. Fine needle like pseudopodia radiate from the surface of the body. These are known as axopodia. Each axopod has central axial rod covered by a moving cytoplasm The body of the helizoan consists of outer vacuolated ectoplasmic cortex and inner dense medula. The medulla contains a dense cytoplasm, one to several nuclei and bases of axial rods.

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Figure: Multinucleate heliozoan, Echinisphaenum


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