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Given below are two statements:
I: Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature
II: Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature
Select the most appropriate option:
  • a)
    I is correct but II is incorrect
  • b)
    I is incorrect but II is correct
  • c)
    Both I and II are correct
  • d)
    Both I and II are incorrect
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Given below are two statements:I: Amphibians and reptiles have a 3-ch...
  • The heart is three-chambered (two auricles and one ventricle).
  • Heart is usually three-chambered, but four-chambered in crocodiles.
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Community Answer
Given below are two statements:I: Amphibians and reptiles have a 3-ch...
Statement I: Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature.

Statement II: Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature.

Explanation:

Statement I: Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature.

- Amphibians and reptiles, such as frogs, turtles, and lizards, have a 3-chambered heart.
- The heart consists of two atria and a single ventricle.
- The two atria receive deoxygenated blood from different parts of the body.
- The blood from the two atria mixes in the single ventricle before being pumped out to the body.
- This mixing of oxygenated and deoxygenated blood reduces the efficiency of oxygen supply to the body.
- Amphibians and reptiles are oviparous, which means they lay eggs for reproduction.

Statement II: Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature.

- Crocodiles, as well as birds and mammals, have a 4-chambered heart.
- The heart consists of two atria and two ventricles.
- The two atria receive deoxygenated blood and oxygenated blood separately.
- The oxygenated blood and deoxygenated blood are kept separate in the ventricles, preventing mixing.
- This allows for efficient oxygen supply to the body.
- Crocodiles are viviparous, which means they give birth to live young ones instead of laying eggs.

Conclusion:

The correct option is a) I is correct but II is incorrect because amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature, while crocodiles have a 4-chambered heart with two ventricles and two atria and are viviparous in nature.
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Given below are two statements:I: Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in natureII: Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in natureSelect the most appropriate option:a)I is correct but II is incorrectb)I is incorrect but II is correctc)Both I and II are correctd)Both I and II are incorrectCorrect answer is option 'A'. Can you explain this answer?
Question Description
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