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Morphological and Anatomical Evidences

Wings of a ba...

Question

Wings of a bat and arms of a human are homologous whereas wings of bat and wings of butterfly are analogous. Justify. [2 marks]

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Solution

Wings of a bat and arms of a human perform different functions but is similar in structure. So, they are homologous organs. [1 mark]

Wings of bat and butterfly perform the same function i.e. flying, but they are not structurally similar. So, they are analogous organs. [1 mark]

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Q. State with reasons whether the following are homologous organ or analogous organ.
Wings of butterfly and wings of a bat.

Q. Assertion 1: Wings of a bat and a bird are analogous organs.

Assertion 2: Forelimbs of a bat and a bird are homologous organs.

Reason : Wings of a bat and a bird do not share a common origin.

Q. Which of the following are pairs of analogous organs?
I. Forelimbs of horse-Wings of bat

II. Wings of bat-Wings of butterfly
III. Forelimbs of horse-Wings of butterfly

IV. Wings of bird-Wings of bat

Q. Choose the correct statements with reference to organic evolution
(a) Flippers of Whale and wings of bat exhibit analogy
(b) Wings of Butterfly and wings of Bird exhibit homology
(c) Organs with dissimilar structure are called analogous organs
(d) Organs with similar structure and origin are called homologous organs

Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not? [2 MARKS]

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