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Describe the characteristic features of different Prochordates.
a. Prochordates are the forerunners of . The classification of prochordates are based on the nature of .
b. Prochordata further have subphyla.
c. are coelomate animals found to have both non-chordate and chordate features. They have gill slits but .
d. They are ciliary feeders and mostly remain as .
e. notochord extends throughout the entire length of the body. They are small fish like chordates with unpaired dorsal fins.
f. notochord is present only in the tail region of free-living larva.
g. Adults are sessile forms and mostly degenerate. Their body is covered with a or test. Examples include Ascidian.
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