Question

Name the ctenophora which has nematocyst.

Answer 1

Another difference between cnidarian medusae and ctenophores is that cnidarians, as the name indicates,have stinging cells, nematocysts, used to capture prey and for defence.Ctenophores do not have nematocysts. Some species have long, contractile tentacles, which may havesome sticky cells, colloblasts


Organism is Fish

Answer 2

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HERE IS YOUR ANSWER

Ctenophora (ten-O-pho-ra) is a combination of two Greek roots meaning comb bearers [cteno (κτένα) comb; and phoro (φέρω) bearers]. The name is a reference to the comb-like ciliary rows.

The ctenophores are diploblastic with a modified radial or biradial symmetry. Their tentacles (see figure A above) have adhesive structures called colloblasts that do not seem to be homologous to the nematocysts (=cnidae) of the Cnidaria. Mnemiopsis has become an exotic pest in the waters of the Black and Caspian Seas (Figure B). Some, like Beroe (Figure C), have no tentacles but entrap their prey (usually other ctenophores) with their large gaping mouths. Although most ctenophores are planktonic, many species are benthic. One such genus, Coeloplana is decidedly bilaterally symmetrical. The comb-like ctenes (see Figure E) give the group its name. They often have a characteristic cydippid larval stage.

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