Q. No.The endosymbiosis between early eukaryotes and the prokaryote lineage would be an example of:
1. Commensalism 2. Mutualism 3. Parasitism 4. Competition
Consider the following statements (A)-(D) each with one or two blanks.
| A. | Bears go into __(i)__ during winter to __(ii)__ cold weather |
| B. | A conical age pyramid with a broad base represents __(iii)__ human population |
| C. | A wasp pollinating a fig flower is an example of __(iv)___ |
| D. | An area with high levels of species richness is known as __(v)___ |
| 1. | (ii) - Stable (iv) Commensalism, (v) Marsh |
| 2. | (i) - Aestivation, (v) - Escape, (iii) - Stable, (iv) - Mutualism |
| 3. | (iii) - Expanding, (iv) - Commensalism, (v) Biodiversity park |
| 4. | (i)- Hibernation, (ii) - Escape, (iii) - Expanding, (v) Hot spot |
Which one is a correct matching of plant, its habitat and the forest type where it normally occurs
1. Prosopis –Tree–shrub
2. Saccharum–grass–forest
3. Shorea robusta–Herb–tropical rain forest
4. Acacia catechu–tree–coniferous forest
Desert lizards are able to keep their body temperature fairly constant by:
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. |
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