Q. No.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 |
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 |
The relationship between cattle egret and grazing cattle can be best described as:
| 1. | Mutualism | 2. | Commensalism |
| 3. | Parasitism | 4. | Competition |
Match plants in Column I with their Ecological adaptations in Column II and select the correct answer from the codes given:
|
|
Plants |
|
Ecological adaptation |
|
A. |
Mangroves |
P. |
High-temperature optima for photosynthesis |
|
B. |
Heliophytes |
Q. |
Deep root systems |
|
C. |
Water hyacinth |
R. |
Viviparity |
|
D. |
Prosopis |
S. |
Inflated petiole |
Codes:
| A | B | C | D | |
| 1. | R | P | S | Q |
| 2. | S | P | R | Q |
| 3. | R | P | Q | S |
| 4. | P | Q | R | S |
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