Question

Open circulation found only in vertebrates.

Select one:

a. False

b. True
​

Answer 1

Answer:

False

Explanation:

A valve is a membranous structure present in a hollow organ. It folds or closes to prevent the return flow of the body fluid passing through it. The valves present in between the auricles and ventricles are meant to prevent the backflow of blood from the ventricles to auricles. Valves are also a part of veins.

So, the correct option is 'False'.

Answer 2

Answer:

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