A | Desertification | A type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid. |
B | Soil erosion | A form of soil degradation, it is the denudation of the fertile top layer of the soil. |
C | Water-logging | It is the saturation of soil with water where the soil is nearly saturated with water much of the time such that its air phase is restricted and anaerobic conditions prevail. |
D | Soil Salinity | It is the salt content in the soil; the process of increasing the salt content is known as salinization. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion (A): | Irrigation without proper drainage of water has a very detrimental effect on crops. |
Reason (R): | It draws salt to the surface of the soil which is inimical to the growth of crops. |
1. | Both (A) and (R) are true but (R) does not explain (A). |
2. | (A) is true but (R) is false. |
3. | (A) is false but (R) is true. |
4. | Both (A) and (R) are true and (R) explains (A). |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAccording to the recommendations of the National Forest Policy of 1988, what percentage of the area is recommended as forest cover for hills?
1. | 19 | 2. | 33 |
3. | 50 | 4. | 67 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySlash and burn agriculture leads to nutrient-depleted soils and deforestation if:
1. crash crops are implanted rather than cereals
2. it is practiced in a sufficiently larger area
3. some useful trees are retained by the farmers
4. sufficient time is not allowed for the land to recover
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not a consequence of deforestation?
1. | An increase in atmospheric carbon dioxide as trees can hold a lot of carbon in their biomass. |
2. | Loss of biodiversity due to habitat destruction. |
3. | A wetter climate as trees can hold a lot of water. |
4. | Soil erosion due to loss of the protective layer of vegetation. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich award is given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
1. Venu Menon Animal Allies Award
2. Amrita Devi Bishnoi Award
3. David Shepherd Wildlife Award
4. The Pledge Award
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology