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Heart of fish contain:...

Heart of fish contain:

A

One atrium and one ventricle

B

Two atria and one ventricle

C

Two atria and two ventricles

D

One atrium and two ventricles

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Heart Structure of Fish**: Fish have a unique heart structure compared to other animals. Their heart is specifically adapted to their aquatic environment. 2. **Identifying the Chambers**: The heart of a fish consists of two main chambers. These are: - **Atrium (or Auricle)**: This is the chamber that receives deoxygenated blood from the body. - **Ventricle**: This chamber pumps the blood out to the gills for oxygenation. 3. **Accessory Chamber**: In addition to the two main chambers, fish hearts also contain an accessory chamber called the **sinus venosus**. This chamber acts as a reservoir for blood before it enters the atrium. 4. **Evaluating the Options**: - Option A: One atrium and one ventricle (Correct) - Option B: Two arteries and one ventricle (Incorrect) - Option C: Two arteries and two ventricles (Incorrect) - Option D: One atrium and two ventricles (Incorrect) 5. **Conclusion**: Based on the structure of the fish heart, the correct answer is that the heart of a fish contains **one atrium and one ventricle**. **Final Answer**: The heart of a fish contains one atrium and one ventricle. ---
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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.

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