Q. No.Which one of the following pair of items correctly belongs to the category of organs mentioned against it?
1.
Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs
2.
Nictitating membrane and blind spot in the human eye – vestigial organs
3.
Nephridia of the earthworm and Malpighian tubules of cockroach - Excretory organs
4.
Wings of a honey bee and wings of crow - Homologous organs
| 1. | Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs |
| 2. | Nictitating membrane and blind spot in the human eye – vestigial organs |
| 3. | Nephridia of the earthworm and Malpighian tubules of cockroach - Excretory organs |
| 4. | Wings of a honey bee and wings of crow - Homologous organs |
| 1. | They could separate combinations of molecules from the surroundings |
| 2. | They were able to reproduce |
| 3. | They were partially isolated from the surroundings |
| 4. | They could maintain an internal environment |
Select the correct statement from the following:
| 1. | Darwin variations are small and directionless |
| 2. | fitness is the end result of the ability to adapt and gets selected by nature |
| 3. | all mammals except whales and have seven cervical vertebrae |
| 4. | Mutations are random and directional |
The finches of the Galapagos islands provide evidence in favour of:
1. special creation
2. evolution due to mutation
3. retrogressive evolution
4. biogeographical evolution
Which one of the following statements is correct?
| 1. | Stem cells are specialized |
| 2. | There is no evidence of the existence of gills during embryogenesis of mammals |
| 3. | All plant and animal cells are totipotent |
| 4. | Ontogeny repeats phylogeny |
What is common to whales, seals, and sharks?
1. Seasonal migration
2. Thick subcutaneous fat
3. Convergent evolution
4. Homeothermy
Adaptive radiation refers to:
| 1. | adaptations due to geographical isolation |
| 2. | evolution of different species from a common ancestor |
| 3. | migration of members of a species to different geographical areas |
| 4. | power of adaptation in an individual to a variety of environments |
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:
1. divergent evolution
2. microevolution
3. co-evolution
4. convergent evolution
Which one of the following amino acids was not found to be synthesized in Miller’s experiment?
| 1. | Glycine | 2. | Aspartic acid |
| 3. | Glutamic acid | 4. | Alanine |
An important evidence in favour of organic evolution is the occurrence of:
1. homologous and vestigial organs
2. analogous and vestigial organs
3. homologous organ only
4. analogous organ only
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