SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sessile, sedentary body form
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stinging cell
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support structure
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None of the above
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Detailed explanation-1: -The polyp is a sessile or sedentary and cylindrical form like Hydra, Adamsia, etc. whereas the medusa is umbrella-shaped and free-swimming like Aurelia or jelly fish.
Detailed explanation-2: -The polyp body form is sessile, elongated, and hollow. Their lower end is attached to a substratum. Their free upper end is where the mouth and the tentacles are located. One of the major differences between polyp and medusa is their mode of reproduction.
Detailed explanation-3: -The polyp stage tends to be sessile and the medusa stage is mobile. Some species of Cnidarians have bioluminescence. Anthozoans: Consists of solitary and colonial polyps.
Detailed explanation-4: -polyp, in zoology, one of two principal body forms occurring in members of the animal phylum Cnidaria. The polyp may be solitary, as in the sea anemone, or colonial, as in coral, and is sessile (attached to a surface).