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प्रश्न
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
उत्तर
The wings of butterfly and bat are analogous but not homologous.
Examples of analogous structures are as follows:
1. Wings of butterfly (insects) and of birds look superficially alike but they are not anatomically similar structures though they perform similar functions.
2. Eye of the octopus (mollusca) and of mammals. They differ in their retinal position, the structure of lens, and the origin of different eye parts.
3. The flippers of penguins (birds) and dolphins (mammals).
4. Sweet potato (root modification) and potato (stem modification) store food in form of starch.
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संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:
Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)
(A) Potato and sweet potato
(B) Radish and carrot
(C) Okra and sweet potato
(D) Potato and tomato
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
How do you differentiate homologous organs from analogous organs?
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.
Give an example for convergent evolution and identify the features towards which they are converging.
Complete the following chart:
