[(c) and (d) have a true c...] The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a com

For Competitive Exams

The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals.
(a) (b) (c) (d)

(a) and (d) have cnidoblasts for self-defence

(a) and (d) respire mainly through body wall

(b) and (c) show radial symmetry

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