SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Polyp
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Medusa
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Either A or B
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None of the above
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Detailed explanation-1: -The body of a medusa, commonly called a jellyfish, usually has the shape of a bell or an umbrella, with tentacles hanging downward at the margin.
Detailed explanation-2: -The medusa is a free-swimming form; it moves by rhythmic muscular contractions of the bell, providing a slow propulsive action against the water. The other principal body type of the adult cnidarian is the polyp, a stalked, sessile (attached) form.
Detailed explanation-3: -The second structural form that cnidarians have is called the medusa form. Medusa bodies are shaped like an umbrella with the mouth and tentacles hanging down in the water.
Detailed explanation-4: -Medusa is the sexually reproducing stage in the life cycle of Coelenterates such as Aurelia. It is a free-swimming form with an umbrella shape. As medusa is the sexual form, they produce gametes which fuse to form asexual form called polyp.
Detailed explanation-5: -Both polyp and medusa are the two body forms of the animals belonging to the phylum Cnidaria. Polyps are non-motile with cylindircal body and long stalk. Eg-Hydra. Medusa are free swimming, umbrella-shaped and have a reduced stalk. Eg-Jellyfish. More items