Question

Viviparous echinodarmata is

Answer 1

Echinoderms

Explanation:

1. The individuals from this phylum are called Echinoderms. An Echinoderm signifies, "Barbed cleaned". That is the reason the creatures of this phylum are called barbed cleaned creatures.
2. Echinoderms  phylum such as Starfish, Brittle star, Sea urchin, Sea cucumber, Sand dollars, Sea lily and plume star are incorporated.  Starfish (additionally called Sea star).
3. Starfish has a place with class Asteroidea and are star-formed echinoderms. For the most part the types of starfish are gonochorous. They are delicate to marine contamination and can imitate both explicitly and abiogenetically. There are around 1500 types of starfish.

      Qualities of Echinoderms  

• They are for the most part marine creatures  
• Their hatchling has reciprocally balanced body however grown-up has radially even body.
• These creatures for the most part have five sections or arms, so they are considered as pentaradial or pentamerous creatures.  
• Their body is unsegmented without head and cerebrum.  
• They have calcareous skeleton. The calcareous plates likewise bear spines, called spicules,
• They are the main spineless creatures having both an exoskeleton and endoskeleton.  
• They are triploblastic.