Question

डायग्नोस्टिक कैरेक्टर्स ऑफ ऑल chordates
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Answer 1

Answer:

Phylum Chordata, the largest of the deuterostome phyla, is a diverse assemblage of marine, fresh water and terrestrial animals. The chordates are triploblastic, bilaterally symmetrical, metameric, coelomate organisms with anteroposterior and dorsoventral axes.

It includes sea squirts, amphioxus, cyclostomes, fishes, amphibians, reptilians, birds and mammals. All possess three unique chordate features a dorsal rod-like notochord, a dorsal tubular nerve cord and pharyngeal clefts or slits through the pha­ryngeal wall. In many chordates some of these characteristics are found only in de­velopmental stages.

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