- 1(current)
Q. No.All the following are examples of analogous organs except:
| 1. | Thorn and tendrils of Bougainvillea and Cucurbita |
| 2. | Sweet potato and Potato |
| 3. | Flippers of Penguins and Dolphins |
| 4. | Eye of the Octopus and of Mammals |
Subtopic: Â Natural Selection |
 88%
From NCERT
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Industrial melanism is an example of:
| 1. | Natural selection | 2. | Mutation |
| 3. | Racial difference | 4. | Predation |
Subtopic: Â Natural Selection |
 95%
From NCERT
AIPMT - 1999
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Stabilizing selection acts to _________ in a species' population.
1. elaborate new traits
2. alter traits
3. push for directional change
4. maintain a certain phenotype
Subtopic: Â Modern Theory of Evolution |Â Natural Selection |
 79%
From NCERT
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Match each item in Column I with one item in Column II and chose your answer from the codes given below.
|
Column I |
Column II |
|
I. Homologous organs II. Analogous organs III. Vestigeal organs |
1. Eye of an octopus and the eye of a mammal 2. Thorn of Bougainvillea and tendril of Cucurbita 3. Body hair and wisdom teeth in humans |
Codes:
| I | II | III | |
| 1. | 1 | 2 | 3 |
| 2. | 3 | 1 | 2 |
| 3. | 2 | 1 | 3 |
| 4. | 1 | 3 | 2 |
Subtopic: Â Natural Selection |
 90%
From NCERT
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For natural selection to bring about evolution, the trait selected by the nature must be:
| 1. | Dominant | 2. | Recessive |
| 3. | Mutant | 4. | Inherited |
Subtopic: Â Natural Selection |
 59%
From NCERT
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- 1(current)
Q. No.
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