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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation3 Marks
Question
Differentiate between single circulation and double circulation; with an example for each.
✓

Answer

S. No
Single circulation
Double circulation
(a)
It is the process in which the heart of an animal receives and pumps either oxygenated or deoxygenated blood.
It is the process in which the heart of an animal receives and pumps oxygenated and deoxygenated blood through two separate pathways, without any mixing up.
(b)
Heart is two-chambered with a single atriumand a single ventricle.e.g. fish.
Heart is four-chambered ventricles. e.g. mammals and birds.

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