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Subject :NSO    Class : Class 7

The given graph shows measurements of different types of blood vessels (X, Y and Z). Select the incorrect option regarding these.

ABlood vessels of type Y have valves.
BBlood vessels of type X carry blood away from the heart.
CBlood vessels of type Z connect an X to a Y.
DBlood vessels of type X are superficially placed and blood vessels of type Y are deep seated in the body.

there is no incorrect option in the given question

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