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B
Absence of nematocysts
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C
Presence of colloblasts of lasso cells on the tentacles for capturing food
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D
All of the above
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Solution
The correct option is D All of the above Ctenophora is a phylum of animals that live in marine waters. The outer surface bears usually eight comb rows. This is called as comb plates or swimming-plates, which are used for swimming. Ctenophora lack stinging nematocysts. Lasso cells are kind of defensive and offensive stinging cells. These are found in great numbers in all coelentrates.