Regarding blood circulation,it may be said th | vedclass

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(D) In $Pheretima$,the dorsal vessel acts as a distributing vessel in the anterior region (first $13$ segments) to supply blood to the body parts.In t

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Distributing vessel in first thirteen segments & collecting vessel in intestinal region

Vedclass · Answer

(D) In $Pheretima$,the dorsal vessel acts as a distributing vessel in the anterior region (first $13$ segments) to supply blood to the body parts.In the intestinal region (behind the $13^{th}$ segment),it acts as a collecting vessel,receiving blood laden with digested nutrients and ${O_2}$ from the body wall and gut.

Regarding blood circulation,it may be said that in $Pheretima$,the dorsal vessel is a:

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