Class 9 Biology Diversity In Living Organisms Vertebrata


The animals belonging to this group possesses a true vertebral column.

These organisms have internal skeleton which allows a completely different distribution of muscle attachment points required for movement.

Animals belonging to this group are bilaterally symmetrical.

They are triploblastic, coelomic and segmented.

They have a notochord, dorsal nerve cord and paired gill pouches.

They also have a complex differentiation of body tissues and organs.

This group of animals can be further divided into following categories:

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