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Heart is four chambered in...

Heart is four chambered in

A

Amphibia

B

Fishes

C

Mammals

D

Reptiles

Text Solution

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The correct Answer is:
To answer the question "Heart is four chambered in," we will analyze the heart structure of different classes of animals. ### Step-by-Step Solution: 1. **Identify the Classes of Animals**: We need to consider the classes of animals mentioned: Amphibia, Pisces, Reptiles, and Mammals. 2. **Heart Structure in Pisces (Fish)**: Fish have a two-chambered heart, consisting of one atrium and one ventricle. Therefore, they do not have a four-chambered heart. 3. **Heart Structure in Amphibia (Amphibians)**: Amphibians have a three-chambered heart, which includes two atria and one ventricle. Thus, they also do not possess a four-chambered heart. 4. **Heart Structure in Reptiles**: Reptiles typically have a three-chambered heart, which includes two atria and one ventricle. However, there is a partial septum that divides the ventricle, making it somewhat more complex but still not fully four-chambered. 5. **Heart Structure in Mammals**: Mammals have a completely four-chambered heart, consisting of two atria and two ventricles. This structure allows for efficient separation of oxygenated and deoxygenated blood. 6. **Conclusion**: Based on the analysis, the correct answer to the question "Heart is four chambered in" is Mammals. ### Final Answer: The heart is four-chambered in Mammals.
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Knowledge Check

  • Consider the following statements, 1. In birds, heart is four chambered 2. In reptiles, respiration is done through skin 3. Earth worm are harmaphrodites. Which of the statements given above is/are correct?

    A
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    C
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    A
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    B
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    C
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    A
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    B
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    C
    Reptiles
    D
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