The heart of mammals and birds is four-chambered, while fishes have two-chambered hearts and amphibians and reptiles have three-chambered hearts. The hearts of birds and mammals are:

Analogous

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Homologous

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Parallel

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Transitional

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Vestigial

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Solution

The correct option is B Homologous
Organs that are structurally similar and functionally different are called homologous organs. The hearts of birds and mammals show similarities in the basic structure (possess 4 chambers), but functionally the heart of humans is more complex than birds.

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Similar questions

Q. Match the following:

\begin{matrix} (i) A m p h i b i a n s a n d m o s t r e p t i l e s & A . 2 - c h a m b e r e d h e a r t (i i) B i r d s a n d m a m m a l s & B . 3 - c h a m b e r e d h e a r t (i i i) F i s h & C .4 - c h a m b e r e d h e a r t \end{matrix}

Q. Match the following:

\begin{matrix} (i) A m p h i b i a n s a n d m o s t r e p t i l e s & A . 2 - c h a m b e r e d h e a r t (i i) B i r d s a n d m a m m a l s & B . 3 - c h a m b e r e d h e a r t (i i i) F i s h & C . 4 - c h a m b e r e d h e a r t \end{matrix}

Match the following:
$\begin{matrix} (i) Amphibians and most reptiles & A. 2-chambered heart (ii) Birds and mammals & B. 3-chambered heart (iii) Fish & C.4-chambered heart \end{matrix}$

Which one of the following sets of animals share a four chambered heart?

(a) Amphibian, Reptiles, Birds

(b) Crocodiles, Birds, Mammals

(d) Lizards, Mammals, Birds

Q. Assertion: Mammals and birds are warm blooded organisms which maintain a uniform internal body temperature.
Reason: Mammals and birds have a four-chambered heart.

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The heart of mammals and birds is four-chambered, while fishes have two-chambered hearts and amphibians and reptiles have three-chambered hearts. The hearts of birds and mammals are:

The correct option is B HomologousOrgans that are structurally similar and functionally different are called homologous organs. The hearts of birds and mammals show similarities in the basic structure (possess 4 chambers), but functionally the heart of humans is more complex than birds.

The correct option is B Homologous
Organs that are structurally similar and functionally different are called homologous organs. The hearts of birds and mammals show similarities in the basic structure (possess 4 chambers), but functionally the heart of humans is more complex than birds.