Write down four main characters of chordates.

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Solution

(i) Body is bilaterally symmetrical, metamerically segmented, triploblastic and coelomate.
(ii) A post-anal tail present at some stage of life
(iii) Segmental muscles in an unsegmented trunk.
(iv) Ventarl heart, with dorsal and ventral blood vessels and closed blood vascular system.

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