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Question

Read the following statements:
(i) Exclusively marine
(ii) The body bears eight rows of ciliary comb plates
(iii) Comb plates help in adhesion
(iv) Sexes are separate
(v) Fertilisation is external with direct development

How many statements is/are correct for ctenophores?

A
one
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B
two
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C
three
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D
four
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Solution

The correct option is B two
Ctenophores are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation. The body bears eight external rows of ciliated comb plates, which help in locomotion.
Sexes are not separate. Reproduction takes place only by sexual
means. Fertilisation is external with indirect development.

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