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| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Planula | $1$. Coelenterata |
| $B$. Tornaria | $2$. Hemichordata |
| $C$. Trochophore | $3$. Annelida |
| $D$. Bipinnaria | $4$. Echinodermata |
| $E$. Glochidium | $5$. Mollusca |
| Column-$I$ | Column-$II$ |
| $I.$ Hepatopancreas | $p.$ Mollusca |
| $II.$ Digestive tract with digestive glands | $q.$ Arthropoda |
| $III.$ Digestive tube straight or coiled | $r.$ Hemichordata |
| $IV.$ Straight or $U$-shaped digestive tract | $s.$ Echinodermata |
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