| Column-$I$ | Column-$II$ (Phylum) | Column-$III$ (Example) |
|---|---|---|
| $I$. Water canal system | $a$. Porifera | $p$. Sea lily |
| $II$. Proboscis | $b$. Hemichordata | $q$. Sepia |
| $III$. Water vascular system | $c$. Mollusca | $r$. Sycon |
| $IV$. Shell | $d$. Echinodermata | $s$. Balanoglossus |
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| Column $I$ | Column $II$ |
|---|---|
| $A$. Aptenodytes | $p$. Aves |
| $B$. Hemidactylus | $s$. Reptilia |
| $C$. Carcharodon | $q$. Chondrichthyes |
| $D$. Pteropus | $r$. Mammalia |
| Organisms | Characteristics |
|---|---|
| $(a)$ Platyhelminthes | $(i)$ Cylindrical body with no segmentation |
| $(b)$ Echinoderms | $(ii)$ Warm-blooded animals with direct development |
| $(c)$ Hemichordates | $(iii)$ Bilateral symmetry with incomplete digestive system |
| $(d)$ Aves | $(iv)$ Radial symmetry with indirect development |
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