For observing a haemocoel,which animal would | vedclass

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(D) haemocoel is a body cavity filled with blood,which is a characteristic feature of the phylum $Arthropoda$ and $Mollusca$.Among the given options:-

Vedclass · Accepted Answer

Scolopendra

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(D) haemocoel is a body cavity filled with blood,which is a characteristic feature of the phylum $Arthropoda$ and $Mollusca$.Among the given options:- Earthworm $(Annelida)$ has a true coelom.- Hydra $(Cnidaria)$ has a gastrovascular cavity.- Sponge $(Porifera)$ lacks a body cavity.- Scolopendra $(Arthropoda)$ possesses an open circulatory system where the body cavity is modified into a haemocoel.Therefore,$Scolopendra$ is the correct choice.

Column-$I$ (Order)	Column-$II$ (Insects)
$P$. Coleoptera	$I$. Beetles
$Q$. Lepidoptera	$II$. Flies,Mosquitoes
$R$. Diptera	$III$. Tobacco budworm,Armyworm

For observing a haemocoel,which animal would you select?

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Column-$I$ (Order) Column-$II$ (Insects)
$P$. Coleoptera $I$. Beetles
$Q$. Lepidoptera $II$. Flies,Mosquitoes
$R$. Diptera $III$. Tobacco budworm,Armyworm

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