Forelimbs of frogs and lizards are the example of ________ organs.
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Homologous

Analogous

Both A and B

None of these

answer is A.

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Detailed Solution

Concept: Complete answer:
Forelimbs of frogs and lizards are the instance of homologous organs.
Homologous structures are the anatomically similar structures that have a typical ancestor. whether or not they're superficially different, they're developmentally related. Homologous structures don't share the identical function. The hoping legs of the frog contain the identical bones as a lizard’s forelimb, the humerus, the radius, and therefore the ulna but the frog’s legs are highly modified to perform a unique function (hoping) and lizard’s leg for locomotion. as an example, Limbs of Human, Bat, and Mouse are strikingly similar but, humans write from hand-limbs, mice run, and bat flies.
Additional Information: Analogous organs are those organs that perform the identical functions but have different ancestors and structures. as an example, the wings of bats and birds have a distinct structure but perform the identical function of flying. it's convergent evolution as despite having different ancestors they're performing the identical functions.
There is wide evidence that supports evolution. Two of them are homologous and analogous structures. The difference between them is as follows:
Homologous Structure Analogous Structure
Similar anatomy Dissimilar anatomy
Dissimilar functions Similar Functions
Inherited from a typical ancestor Not inherited from ancestors
Develops in related species Develops in unrelated species
A results of divergent evolution A results of convergent evolution
These developed as a result of the variation to a unique environment These developed as a result of the difference to an analogous environment
So, the right answer is ‘Homologous’.
Note: The observations of structural homology support the causal hypothesis of evolutionary homology: that the common structural organisation results from common ancestry. The evidence of analogous structures further supports the evolutionary homology concept.
Hence, the correct option is 1.

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