| Column-$I$ | Column-$II$ |
| $(a)$. Limulus | $(i)$. Tusk shell |
| $(b)$. Ophiura | $(ii)$. Tapeworm |
| $(c)$. Taenia | $(iii)$. Brain coral |
| $(d)$. Meandrina | $(iv)$. King crab |
| $(e)$. Dentalium | $(v)$. Brittle star |
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| Column-$I$ | Column-$II$ |
| $(a)$ Amphibia | $(1)$ Air bladder |
| $(b)$ Mammalia | $(2)$ Cartilaginous notochord |
| $(c)$ Chondrichthyes | $(3)$ Mammary gland |
| $(d)$ Osteichthyes | $(4)$ Pneumatic bones |
| $(e)$ Cyclostomata | $(5)$ Dual habitat |
| $(f)$ Aves | $(6)$ Jawless,circular,sucking mouth |
| Animals | Morphological features |
| $(i)$ Crocodile | $4$-chambered heart |
| $(ii)$ Sea urchin | Parapodia |
| $(iii)$ Obelia | Metagenesis |
| $(iv)$ Lemur | Thecodont |
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