Coelomates: Protostomes and Deuterostomes Protostomes have ...

More documents

Recommendations

Info

Endoskeleton is made of calcium carbonate plates that form internally Possess a unique water vascular system - a hydraulic system to aid movement and circulation Mouth opens ventrally in most - anus is dorsal Adults have no head or brain Nervous system composed of circular nerve ring and radial branches Sexes are separate Fertilization is external Gonads (ovaries and testes) found in arms
Echinoderms exhibit radial symmetry as adults - but have a bilaterally symmetric larva Transform to pentaradial symmetry as they mature Radial symmetry works well for sessile organisms - primitive echinoderms (like sea lilies) are sessile Bilateral larva thought to indicate that they originated from a bilaterally symmetric ancestor - original ancestor is uncertain
Page 1 and 2: Coelomates: Protostomes and Deutero
Page 3: Phylum Echinodermata - Echinoderms
Page 7 and 8: Operation of the water vascular sys
Page 9 and 10: There are Six Living Classes of Ech
Page 11 and 12: Class Asteroidea - Sea Stars the fa
Page 13 and 14: Class Echinoidea - Sea Urchins and

Coelomates: Protostomes and Deuterostomes Protostomes have ...

Create successful ePaper yourself

Delete template?

Save as template?