Q. No.Biomagnification can occur as a result of:
I:
Persistence
II:
Food chain energetics
III:
Low or non-existent rate of internal degradation or excretion of the substance
1.
I and II only
2.
I and III only
3.
II and III only
4.
I, II and III
Eutrophication of lakes would lead to:
1. Decreased biomass of phytoplankton
2. Increased dissolved oxygen levels in water
3. Decreased biodiversity
4. Increase in the aesthetic value of the lake
Identify the incorrect statement regarding the ecological impact of DDT:
| 1. | It is a persistent organic pollutant. |
| 2. | As it is lipophilic, it bioaccumulates especially in predatory birds. |
| 3. | It can be metabolized to non-toxic forms by human beings. |
| 4. | It causes eggshell thinning in predatory birds. |
Arcata Wildlife Sanctuary in Arcata, California is also a/an:
1. innovative sewer management system
2. tiger reserve
3. nuclear waste disposal site
4. ecological hotspot
Identify the incorrectly matched pair:
|
1. |
International Day of Forests |
March 21 |
|
2. |
World Water Day |
March 22 |
|
3. |
Earth Day |
May 22 |
|
4. |
World Environment Day |
June 5 |
Identify the incorrectly matched pair:
|
1. |
World No Tobacco Day |
May 31 |
|
2. |
World Ocean Day |
June 8 |
|
3. |
International Day for the Preservation of the Ozone Layer |
December 16 |
|
4. |
International Day for Preventing the Exploitation of the Environment in War and Armed Conflict |
November 6 |
To be regarded as a sanitary landfill site, all the following conditions must be fulfilled except:
1. Full or partial hydrogeological isolation
2. Refuge should be kept in an open-burning dump
3. Permanent control
4. Planned waste emplacement and covering
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Polyblend is:
| 1. | environment-friendly way of disposing of solid wastes |
| 2. | replacement of CFCs in the refrigeration industry |
| 3. | an innovative way of sealing the radioactive wastes |
| 4. | a product that has the potential to effectively deal with plastic wastes |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Agricultural [Agro-Chemical] pollution may lead to:
| I: | Leaching, runoff and eutrophication |
| II: | Contamination of water bodies by heavy metals |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
The number of the correct statements regarding organic farming, amongst the following, are:
| I: | Organic farming encourages crop diversity and often employs polyculture. |
| II: | Organic farming relies heavily on the natural breakdown of organic matter. |
| III: | Organic weed management promotes weed elimination, rather than weed suppression |
| IV: | Pest are used under Integrated Pest Management |
| V: | Raising livestock and poultry, for meat, dairy and eggs, is another traditional farming activity that complements growing. |
| VI: | It promotes use of genetically engineered plants and animals. |
1. Three
2. Four
3. Five
4. Six
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