Q. No.How much price has been estimated by the researchers for the fundamental ecosystem services?
1. US $ 22 billion a year
2. US $ 33 trillion a year
3. US $ 40 trillion a year
4. US $ 52 million a year
Who put the price tags on nature’s life-support services?
1. Robert may
2. John Ray
3. Robert Constanza
4. Reiter
How could human activities affect the carbon cycle?
1. By rapid forestation
2. By massive burning of fossil fuel for energy and transport
3. By forest fire
4. More than one of the options given above are correct
1. By rapid forestation
2. By massive burning of fossil fuel for energy and transport
3. By forest fire
4. More than one of the options given above are correct
The products of ecosystem processes are named as-
1. Environment services
2. Ecosystem services
3. Ecosystem products
4. Ecosystem taxes
What is the global gross national product GNP value?
1. US $ 16 trillion
b
2. US $ 18 trillion
3. US $ 24 trillion
4. US $ 26 trillion.
The waste products and the dead organisms are decomposed by ____________releasing phosphorus.
1. parasitic bacteria
2. phosphate-solubilising bacteria
3. phosphate-solubilising fungi
4. Acidic soil.
Match the following:
| Column I | Column II | ||
| (i) | no respiratory release of element into the atmosphere | 1. | Carbon cycle |
| (ii) | atmospheric inputs of elements through rainfall are much smaller | 2. | Phosphorous cycle |
| (iii) | Gaseous exchanges of elements between organism and environment are negligible | ||
| (iv) | Human activities have significantly influenced the cycle | ||
| (v) | According to one estimate, 4×1013 kg of an element is fixed in the biosphere through photosynthesis annually |
1. 1- i and v; 2- ii, iii and iv
2. 1- iv and v; 2- i, ii and iii
3. 1- iv and iii; 2- i, ii and v
4. 1- i and ii, iii; 2- iv and iv
Out of the total cost of various ecosystem services, the soil
formation accounts for about
1.15%
2.25%
3.35%
4.50%
How do herbivores and other animals obtain Phosphorous?
1. From soil in the dissolved form
2. From plants
3. From drinking water
4. Synthesized in the body.
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