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Assertion : The heart of fish contains o...

Assertion : The heart of fish contains only deoxygenated blood.
Reasoning : Oxygenated blood does not return back to the heart in fishes.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

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The correct Answer is:
A
In fishes heart is thick, muscular made up of two chambers (i) auricle and ventricle. The heart is called venous heart since it pumps deoxygenated blood to gills for oxygenation. This blood goes directly from gills to visceral organs.
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Read the assertion and reason carefully to mark the correct option out of the options given below: (a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (c) If the assertion is true but the reason is false (d) If both the assertion and reason are false (e) If the assertion is false but reason is true Assertion : Heart of fish contains only deoxygenated blood. Reason : Oxygenated blood do not return back to the heart in fishes.

The heart of a fish is

Heart of fishes is

Heart of fishes :-

In which animal the heart pumps out only deoxygenated blood?

Oxygenated blood returns from lungs to the heart through :-

Which side of the heart contains oxygenated (pure) blood ?

The blood vessel which carries oxygenated blood from the lungs to the heart is :