In this article we will discuss about the habit, habitat and life history of Obelia. Habit and Habitat of Obelia: Obelia is a typical representative of colonial hydrozoa (Fig. 12.14). It is exclusively marine. It exists in two principal forms, the polyp and the medusa. The polyp or hydroid form represents the asexual phase of […]
An Example of Phylum Cnidaria: Obelia
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