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| 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 |
| List $I$ | List $II$ |
| $A$. Pterophyllum | $I$. Hag fish |
| $B$. Myxine | $II$. Saw fish |
| $C$. Pristis | $III$. Angel fish |
| $D$. Exocoetus | $IV$. Flying fish |
| Column $X$ | Column $Y$ | Column $Z$ |
| $(1)$ Water vascular system | $(A)$ Porifera | $(p)$ Starfish |
| $(2)$ Proboscis | $(B)$ Hemichordata | $(q)$ Sepia |
| $(3)$ Canal system | $(C)$ Mollusca | $(r)$ Hyalonema |
| $(4)$ Shell | $(D)$ Echinodermata | $(s)$ Balanoglossus |
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