In scyphozoans (jellyfish),

Question

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Prey is captured by injecting a toxin in scyphozoans, which is done by the stinging cells called nematocysts present in their tentacles.

Note: None of the other statements are correct. The dominant form in scyphozoans is the medusa (jellyfish), and the polyp form is usually present only briefly during the life cycle. Polyps are not motile but attach themselves to a substrate. In scyphozoans, fertilization occurs externally, and the gamete-producing stage is not hermaphroditic.

In Scyphozoans (Jellyfish)