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Open blood vascular system is present in Pheretima.

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in Biology – Class 11 by (272k points)
Open blood vascular system is present in Pheretima.

(a) True

(b) False

The question was asked in an online interview.

I'd like to ask this question from Animals Structural Organisations topic in portion Structural Organisations in Animals of Biology – Class 11

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The correct option is (b) False

For explanation I would say: Pheretima has a closed blood vascular system. This implies that its blood is confined to the components of the vascular system only. The components of this vascular system are heart, blood vessels and capillaries. In closed type of vascular system, the circulating blood travels in one direction only.

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