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प्रश्न
How do you differentiate homologous organs from analogous organs?
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उत्तर
| Sr. No. | Homologous organs | Analogous organs |
| 1. | The homologous organs have been inherited from common ancestors, with similar developmental pattern in embryos. | Analogous structures are shown in a batwing, a bird wing and an insect wing. |
| 2. | The forelimbs of a human hand, a front leg of a cat, the flipper of a whale and a bat’s, wing look dissimilar and adapted for different functions. | The analogous organs look similar but perform similar functions. |
| 3. | Their mode of development and the basic structure of bone are similar. | They have a different origin. Wings of insect are membranous extensions whereas wings of a bat is a bony structure. But performing the same function of flying. |
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संबंधित प्रश्न
Which of the following is a correct set of homologous organs?
(a) Forelimbs of frog, bird and lizard
(b) Spine of cactus and thorn of bougainvillea
(c) Wings of bat and wings of butterfly
(d) Wings of a bird and wings of a bat
Four students P, Q, R and S differently reported the following set of organs to be analogous :
P. Forelimb of a frog and forelimb of a lizard
Q. Forelimb of a bird and forelimb of a human
R. Wings of a parrot and wings of a butterfly
S. Wings of a bird and wings of a bat
The two students who have reported correctly are :
(A) P and Q
(B) Q and R
(C) R and S
(D) P and S
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