Read the statements regarding echinoderms. (i) All are marine with organ system level of organis...

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Read the statements regarding echinoderms.
(i) All are marine with organ system level of organisation.
(ii) Adults are bilaterally symmetrical
(iii) They are dioecious
(iv) Fertilisation is internal and indirect development is observed
(v) Triploblastic and acoelomate animals.
Choose the correct option.
(a) (i) and (iii) are correct (b) (v) alone is correct
(c) (i), (iii) and (v) are correct
(d) (i) and (v) are correct
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