Q. No.The wings of a bird and the wings of an insect are:
| 1. | Homologous structures, represent divergent evolution |
| 2. | Analogous structures, represent convergent evolution |
| 3. | Phylogenetic structures, represent divergent evolution |
| 4. | Homologous structures, represent convergent evolution |
Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:
1. Analogous organs
2. Adaptive radiation
3. Homologous organs
4. Convergent evolution
Which one of the following are analogous structures?
1. Wing of Bat and Wings of Pigeon
2. Gills of Prawn and Lungs of Man
3. Thorns of Bougainvillea and Tendrils of Cucurbita
4. Flippers of Dolphin and Legs of Horse.
The eye of the octopus and the eye of the cat show different patterns of structure, yet they perform a similar function. This is an example of:
| 1. | Homologous organs that have evolved due to divergent evolution. |
| 2. | Analogous organs that have evolved due to convergent evolution. |
| 3. | Analogous organs that have evolved due to divergent evolution. |
| 4. | Homologous organs that have evolved due to convergent evolution. |
1. Carrion
2. Insects
3. Tree buds
4. Seeds
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:
1. Adaptive radiation
2. Natural selection
3. Migration
4. Divergent evolution
Which one of the following options gives one correct example of convergent evolution and divergent evolution?
| Convergent Evolution | Divergent Evolution | |
| 1. | Eyes of octopus and mammals | Bones of forelimbs of vertebrates |
| 2. | Thorns of Bougainvillea and tendrils Cucurbita | Wings of butterflies and birds |
| 3. | Bones of forelimbs of vertebrates | Wings of butterfly and birds |
| 4. | Thorns of Bougainvillea and tendrils of Cucurbita | Eyes of Octopus and mammals |
Darwin's finches are a good example of:
1. industrial melanism
2. connecting link
3. adaptive radiation
4. convergent evolution
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements
Statements:
| (A) | Wings of butterflies and birds look alike and are the results of , evolution |
| (B) | Miller showed that CH4, H2, NH3, and , when exposed to electric discharge in a flask resulted in the formation of . |
| (C) | Vermiform appendix is a organ and an evidence pf evolution. |
| (D) | According to Darwin evolution took place due to and of the fittest. |
Options:
| 1. | (A) - (i) convergent, (B) - (ii) oxygen, (ii) nucleosides |
| 2. | (B) - (i) water vapour, (ii) amino acids, (C) - (i) rudimentary (ii) anatomical |
| 3. | (C) - (i) vestigial, (ii) anatomical, (D) - (i) mutations, (ii) multiplication |
| 4. | (D) - (i) small variations, (ii) survival, (A) - (i) convergent |
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