The point by which Annelida advanced over Nem | vedclass

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(D) $Annelida$ represents a significant evolutionary advancement over $Nematoda$ due to several key features:$1$. $Annelids$ possess a true coelom (eu

Vedclass · Accepted Answer

All of the above

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(D) $Annelida$ represents a significant evolutionary advancement over $Nematoda$ due to several key features:$1$. $Annelids$ possess a true coelom (eucoelom),which is a body cavity lined by mesoderm,whereas $Nematodes$ have a pseudocoelom.$2$. $Annelids$ exhibit metameric segmentation,meaning their body is divided into repeating segments both externally and internally.$3$. $Annelids$ possess a closed circulatory system,which is more efficient than the fluid-filled body cavity transport seen in $Nematodes$.Therefore,all the listed features represent advancements.

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

The point by which $Annelida$ advanced over $Nematoda$ is

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