Which of the following is not the characteristic feature of ctenophora?
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a
Exclusively found in marine water.
b
Ciliated comb plates help in locomotion.
c
Reproduction takes place only by sexual means.
d
Sexes are separate. Fertilisation is external with indirect development
answer is D.
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Detailed Solution
Sexes are not separate.Ctenophores, commonly known as sea walnuts or comb jellies are exclusively marine.Reproduction takes place only by sexual means. Fertilisation is external with indirect development.The body bears eight external rows of ciliated comb plates, which help in locomotion.