| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Two-chambered | $(i)$ Peacock |
| $(b)$ Three-chambered | $(ii)$ Labeo |
| $(c)$ Incomplete four-chambered | $(iii)$ Ichthyophis |
| $(d)$ Four-chambered | $(iv)$ Lizard |
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| Column $I$ | Column $II$ |
|---|---|
| $A$. Organ level | $p$. Pheretima |
| $B$. Cellular aggregate level | $q$. Fasciola |
| $C$. Tissue level | $r$. Spongilla |
| $D$. Organ system level | $s$. Obelia |
| $(a)$ Operculum | $(i)$ Ctenophora |
| $(b)$ Parapodia | $(ii)$ Mollusca |
| $(c)$ Scales | $(iii)$ Porifera |
| $(d)$ Comb plates | $(iv)$ Reptilia |
| $(e)$ Radula | $(v)$ Annelida |
| $(f)$ Hairs | $(vi)$ Cyclostomata and Chondrichthyes |
| $(g)$ Choanocytes | $(vii)$ Mammalia |
| $(h)$ Gill slits | $(viii)$ Osteichthyes |
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