exhibit ….. type of blood vascular system |
|||||||
a) |
Portal |
b) |
Closed |
c) |
Open |
d) |
Double circulatory |
exhibit ….. type of blood vascular system |
|||||||
a) |
Portal |
b) |
Closed |
c) |
Open |
d) |
Double circulatory |
(b)
Pheretima exhibits closed type of vascular system, consisting of blood vessels, capillaries and heart. Due to the closed circulatory system, blood is confined to the heart and blood vessels