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Transportation in Plants and Circulation in Animals — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceTransportation in Plants and Circulation in Animals2 Marks
Question
Explain the two types of Circulatory System.
✓

Answer

The two types of Circulatory System in animals are
  1. Open type: The blood is pumped by the heart into blood vessels, that open into blood spaces called sinuses, which are the body cavities called haemocoel. Capillary System is absent. Eg. Arthropods, Molluscs, Ascidians.
  2. Clsed type: The blood flows in a complete circuit around the body, through specific blood vessels. The blood flows from arteries to veins, through small blood vessels called capillaries. Eg. Vertebrates.

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