1. Forelimbs of man, bat and cheetah
2. Heart of bat, man and cheetah
3. Brain of bat, man and cheetah
4. Eye of octopus, bat and man
Which of the following refers to correct example(s) of organisms that have evolved due to changes in environment brought about by anthropogenic action?
(a) | Darwin's Finches of Galapagos islands |
(b) | Herbicide-resistant weeds |
(c) | Drug-resistant eukaryotes |
(d) | Man-created breeds of domesticated animals like dogs |
1. (a) and (c)
2. (b), (c) and (d)
3. only (d)
4. only (a)
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 |
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 |
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 |
Match List-I with List-II:
List-I | List-II | ||
(a) | Adaptive radiation | (i) | Selection of resistant varieties due to excessive use of herbicides and pesticides |
(b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
(c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
(d) | Evolution by anthropogenic action | (iv) | Darwin Finches |
Choose the correct answer from the options given below:
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iv) | (iii) |
2. | (i) | (iv) | (iii) | (ii) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iii) | (ii) | (i) | (iv) |
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. | convergent evolution | 2. | shared ancestry |
3. | stabilizing selection | 4. | divergent evolution |