Q. No.Desert lizards are able to keep their body temperature fairly constant by:
1. Physiological means
2. Anatomical means
3. Biochemical means
4. Behavioral means
1. Physiological means
2. Anatomical means
3. Biochemical means
4. Behavioral means
Which of the following links ecology to population genetics and evolution?
| 1. | Organismic ecology | 2. | Population ecology |
| 3. | Ecosystem ecology | 4. | Biome ecology |
Under a particular set of selection pressures, organisms evolve towards the most efficient:
| 1. | Thermoregulation | 2. | Water conservation |
| 3. | Respiration | 4. | Reproduction strategy |
The invasive prickly pear cactus in Australia was brought under control with the help of:
| 1. | Snail | 2. | Moth |
| 3. | Ladybug | 4. | Fungus |
When Darwin spoke of the struggle for existence, he was convinced that a potent force in organic evolution is:
| 1. | Intraspecific competition | 2. | Interspecific competition |
| 3. | Intraspecific mutualism | 4. | Interspecific mutualism |
When the feeding efficiency of one species is reduced due to the inhibitory presence of the other species, even if resources are abundant, it is called:
| 1. | Interference competition | 2. | Exploitative competition |
| 3. | Amensalism | 4. | Predation |
In Connell’s experiment:
| 1. | Balanus excluded Chathamalus from the intertidal area. |
| 2. | Chathamalus excluded Balanus from the intertidal area. |
| 3. | Balanus is smaller than Chathamalus. |
| 4. | Both are equally competitive. |
In general, competition has the least impact on:
| 1. | Plants | 2. | Herbivores |
| 3. | Carnivores | 4. | Both 1 and 2 |
MacArthur showed that five closely related species of warblers living on the same tree were able to avoid competition and co-exist due to:
| 1. | Behavioral differences in their foraging activities. |
| 2. | Pre-zygotic reproductive isolation mechanisms |
| 3. | Physiological differences in acclimatization |
| 4. | Gene differentiation |
Which of the following is not usually an adaptation for a parasitic mode of life?
| 1. | Loss of unnecessary sense organs |
| 2. | Presence of adhesive organs or suckers |
| 3. | Loss of the digestive system |
| 4. | Low reproductive capacity |
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