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Which of the following is a characteristic feature of the phylum $Echinodermata$?
Medium
View SolutionMatch column-$I$ with column-$II$ :
Column-$I$ Column-$II$ $(i)$ Asterias $(a)$ Brittle star $(ii)$ Echinus $(b)$ Sea lily $(iii)$ Antedon $(c)$ Sea urchin $(iv)$ Ophiura $(d)$ Star fish
| Column-$I$ | Column-$II$ |
| $(i)$ Asterias | $(a)$ Brittle star |
| $(ii)$ Echinus | $(b)$ Sea lily |
| $(iii)$ Antedon | $(c)$ Sea urchin |
| $(iv)$ Ophiura | $(d)$ Star fish |
Medium
View SolutionAbsence of excretory organs,high power of regeneration,and exclusively marine; these are the characteristics of the phylum:
Medium
View SolutionMatch the following columns:
Column-$I$ (Animal) Column-$II$ (Genus) $P$. Starfish $I$. Antedon $Q$. Sea urchin $II$. Echinus $R$. Sea lily $III$. Cucumaria $S$. Sea cucumber $IV$. Asterias $T$. Brittle star $V$. Ophiura
| Column-$I$ (Animal) | Column-$II$ (Genus) |
| $P$. Starfish | $I$. Antedon |
| $Q$. Sea urchin | $II$. Echinus |
| $R$. Sea lily | $III$. Cucumaria |
| $S$. Sea cucumber | $IV$. Asterias |
| $T$. Brittle star | $V$. Ophiura |
Medium
View SolutionWater vascular system (ambulacral system) is found in ...................
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