Question

Define homologous and analogous organs.; Classify the following as homologous or analogous organs:; (i) Wings of an insect and wings of bat.; (ii) Forelimbs of a man and forelimbs of a frog.(Delhi - 2011)

Answer 1

Answer:

homologous means : animals that have same structure buy perform diffrent functions . Analogous:organisms that have different sructure but perform same func are called analogous

Answer 2

Homologous organs:

• Homologous organs are the organs which have a similar internal structure but differ morphologically.
• They have different function.
• Forelimbs of a man and forelimbs of a frog are homologous organs.

Analogous organs:

• Analogous organs are the organs which resemble superficially but their internal structure is different.
• They have similar function.
• Wings of an insect and wings of a bat are analogous organs.