Q. Which one of the following are homologous organs?

A) Wing of butterfly, wing of bird, wing of bat
B) Forelimb of frog, wing of bird, forelimb of rabbit, flipper of whale
C) Thoracic leg of cockroach, hindleg of frog, forelimb of rabbit
D) Wing of bird, wing of bat, wing of flying lizard
Explanation

Forelimb of frog, wings of bird, forelimb or rabbit, flipper of whale. Homologous Organs The organs which have the same fundamental structure but are different in functions are called homologous orangs. These organs follows the same basic plan of organization during development. But in adult condition, these organs are modified to perform different function as an adaptation to the different environment. Homologous organs are the resultant of divergent evolution Implants homologous organs may be a those of Bougainvillea or a tendril of Cucurbita, both arising in the axillary position Vertebrates hearts, vertebrate brains and vertebrate limbs have the same basic plan of organization during development. But in adult condition they are modified. This indicate their homology [image:7_image25.png]

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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