what is homologus and analogus organs?

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Srushti Deshmukh answered this

Homolgous Organs are those, which are similar in their basic structure but different in functions.Eg: Limbs of a human, Frog , lizard etc..

Analogous organs are those, which are not similar in structure but similar in their functions. Eg : Wings of a bad and that of any other butterfly...

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Shhhhhhhhh.......... ... answered this

Homologous organs are those that have same internal bone structures, but their function differs.

Examples would be: Wing of a bat, the lateral fin of a whale, and the human arm[ they all have similar bone structure layout, but they carry out distinct functions] -- Homologous structures means they had came from a common ancestor.

Analogous structures are ones that basically have th same function but not the same underlying structure.

Examples: Bat's wing & Fly's wing- they both are used to help the creature fly, but they have diff patterns in bone structure.

Chahat answered this

Those organs which are similar in origin but different in function are known as homologous organs while those organs which are different in origin but similar in function are known as analogous organs.

Thorns of Bougainvillea and tendrils of cucurbita are homologous organs.

Homologous structures in animals

Analogous structure in plants

Analogous structure in animals

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Amol Sangar answered this

Homologous organs are similar in origin (or are embryologically similar) but perform different functions. For example, the forelimbs of humans and the wings of birds look different externally but their skeletal structure is similar. It means that their origin is similar (as wings in birds are modifications of forearm) but functions are different - the wings help in flight whereas human forearm helps in various activities.

Homologous organs

Analogous organs, on the other hand, have different origin but perform similar functions. For example, the wings of a bird and a bat are similar in function but this similarity does not mean that these animals are more closely related. If we carefully look at these structures, then we will find that the wings of a bat are just the folds of skin that are stretched between its fingers whereas the wings of birds are present all along the arm. Therefore, these organs are analogous organs.