Question
Write the features that distinguish between the two, Open and closed circulatory system.
| Open system | closed system | |
| (i) | In this system, blood is pumped by the heart, through large vessels, into body cavities called sinuses. | In this system, blood is pumped by the heart, throuth a closed netwoek of vessels. |
| (ii) | The body tissues are in direct contact with blood. | The body tissues are in indirect contact with blood. |
| (iii) | Blood flows at low pressure. | Blood flows at high pressure. |
| (iv) | Blood flow cannot be regulated. | Blood flow can be regulated. |
| (v) | This is present in arthroponds and molluscs. | This is present in annelids, echinoderms, and vertebrates. |
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