The consequences of high population density of a population will include all except:
1. toxic waste accumulation
2. an increase in mortality
3. ignorance of overabundant prey by the predators
4. a reduction in reproduction
The endosymbiosis between early eukaryotes and the prokaryote lineage would be an example of:
1. | Commensalism | 2. | Mutualism |
3. | Parasitism | 4. | Competition |
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 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 general, competition has the least impact on:
1. | Plants | 2. | Herbivores |
3. | Carnivores | 4. | Both 1 and 2 |
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 |
Flowers and their insect pollinators must undergo co-evolution because:
1. | Without pollinators plants may get extinct |
2. | Plants have to reward the pollinators |
3. | The relationship must be safeguarded against cheaters |
4. | Insects are the major pollinators of plants |
Identify the biome that is not correctly matched with its mean annual temperature and mean annual precipitation:
|
Biome |
Mean annual temperature [0C] |
Mean annual precipitation [cm] |
1. |
Desert |
0 – 25 |
25 – 100 |
2. |
Temperate Forest |
10 – 22 |
50 – 220 |
3. |
Tropical forest |
20 – 25 |
150 – 425 |
4. |
Coniferous forest |
0 – 15 |
50 – 250 |