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Q.

Which of the following are the functions of water vascular system?

(a) Locomotion

(b) Protection

(c) Respiration

(d) Reproduction

Choose the most appropriate answer from the options given below.

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a

(a) and (b) only

b

(a) and (c) only

c

(b) and (c) only

d

(c) and (d) only

answer is D.

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Detailed Solution

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The most distinctive feature of echinoderms is the presence of water vascular system which helps in locomotion, capture and transport of food and respiration. Spines and pedicillariae help in protection.

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