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What is the difference between arthropoda …

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What is the difference between arthropoda ,mollusca and echinodermata

Posted by Chhavi Sharma 3 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 6 months ago

The presence of joint appendages is the reason for name arthropoda. This is the largest phylum of Animalia and over two-thirds of all known species on the earth are arthropods.
Organ system level of organization is present. Body is bilaterally symmetrical, triploblastic, segmented and coelomate.

Mollusca is the second largest phylum of Animalia. They are terrestrial or aquatic. The aquatic molluscs live in marine or freshwater habitats. Organ system level organization is present. Body is bilaterally symmetrical, triploblastic and coelomate.

Ehinodermates have an endoskeleton made up of calcareous ossicles. Due to this, the body is covered with spines. These are marine animals. Organ system level organization is present. Adults are radially symmetrical but larvae are bilaterally symmetrical. Body is triploblastic and coelomate. Digesive system is complete. Mouth is present on the ventral side and **** is present on the dorsal side.

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