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Question
Closed blood vascular system and chitinous setae or parapodia are the characteristics of
Closed blood vascular system and chitinous setae or parapodia are the characteristics of
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Solution
The correct option is C Annelida
- Annelids are cylindrical worms with segmented bodies.
- The circulatory system is closed, i.e., blood flows within the blood vessels.
- Most annelids possess setae (earthworm) or parapodia (in aquatic annelids) composed of chitin that helps in movement.
- Aschelminthes (roundworms) and poriferans have no circulatory or respiratory systems so they use diffusion to breathe and for the circulation of substances around their body.
- Arthropods have an open circulatory system.
So the correct answer is option C.
- Annelids are cylindrical worms with segmented bodies.
- The circulatory system is closed, i.e., blood flows within the blood vessels.
- Most annelids possess setae (earthworm) or parapodia (in aquatic annelids) composed of chitin that helps in movement.
- Aschelminthes (roundworms) and poriferans have no circulatory or respiratory systems so they use diffusion to breathe and for the circulation of substances around their body.
- Arthropods have an open circulatory system.
So the correct answer is option C.
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