Q. No.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
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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 |
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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 |
Autecology is the:
| 1. | Relation of heterogeneous populations to their environment |
| 2. | Relation of an individual to its environment |
| 3. | Relation of a community to its environment |
| 4. | Relation of a biome to its environment |
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Biosphere is:
| 1. | A component in the ecosystem |
| 2. | Composed of the plants present in the soil |
| 3. | Life in the outer space |
| 4. | Composed of all living organisms present on earth which interact with the physical environment |
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Salt concentration (Salinity) of the sea measured in parts per thousand is:
1. 10-15
2. 30-70
3. 0-5
4. 30-35
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What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?
| 1. | It will grow normally |
| 2. | It will grow well because it is planted in the same locality |
| 3. | It may not survive because of changes in its microclimate |
| 4. | It grows very well because the plant gets more sunlight |
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What parameters are used for the tiger census in our country’s national parks and sanctuaries?
| 1. | Pug marks only | 2. | Pugmarks and fecal pellets |
| 3. | Faecal pellets only | 4. | Actual headcounts |
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Which of the following would necessarily decrease the density of a population in a given habitat?
| 1. | Natality> mortality | 2. | Immigration >emigration |
| 3. | Mortality and emigration | 4. | Natality and immigration |
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