Question

Read the statements regarding echinoderms and choose the correct option
(i) All are marine with organ system level of organization
(ii) Adults are bilaterally symmetrical
(iii) They are dioecious
(iv) Fertilization is internal and indirect development is observed
(v) Triploblastic and acoelomate animals

• A. (i) and (iii) are correct
• B. (v) alone is correct
• C. (i), (iii) and (v). are correct
• D. (i) and (v) are correct
• E. (i) and (ii) are correct

Answer 1

The correct option is A (i) and (iii) are correct

A) (i) is correct as all echinoderms are marine and have organ system level of organisation. (iii) is correct as all echinoderms are dioecious and reproduce sexually.

B) (v) is wrong as echinoderms are coelomate.

C) (v) is wrong while (i) and (iii) are correct.

D) (i) is correct while (v) is wrong.

E) (i) is correct but (ii) is wrong as adults are radially symmetrical.

So the correct answer is '(i) and (iii) are correct'.