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15.Body Fluids and Circulations
medium
In connection with circulatory system, valves are present
A
Not only in heart and blood vessels of vertebrates and invertebrates, but in vertebrate lymphatics as well
B
Vertebrate heart only
C
Vertebrate heart and invertebrate hearts only
D
Vertebrate hearts, invertebrate hearts and their blood vessels
(AIPMT-1995)
Solution
It’s obvious.
Standard 11
Biology