General Science Q & A part - 5

41. In India, which type of forest among the following occupies the largest area?

(a) Montane wet temperate forest

(b) Sub-tropical dry deciduous forest

(c) Tropical moist deciduous forest

(d)Tropical wet evergreen forest

42. Consider the following statements:

1. The Tauxus tree is naturally found in the Himalayas.

2. The Taxus tree is listed in the Red Data Book.

3. A drug called “taxol” obtained from Taxus tree, is effective against Parkinson’s disease.

Which of the above given statements is /are correct?

             (a)    1 only                        (b) 1 and 2 only

(c)2 and 3 only                (d) 1, 2 and 3

43. What are the possible limitations of India in mitigating the global warming at present and in the immediate future?

1. Appropriate alernate technologies are not sufficiently available.

2. India cannot invest huge funds in research and development.

3. Many developed countries have already set up their polluting industries in India.

Which of the statements given above is/are correct?

            (a)    1 and 2 only                          (b) 2 only

(c) 1 and 3 only                           (d) 1, 2 and 3

44. Consider the following pairs:

1. Boreal Forest-high productivity; rapid cycling of nutrients (poor reservoir)

2. Perma frost –swamp forest

3. Chaparral –a type of dry shrub land

4. Tropical rain forest feature arctic tundra

Select the correctly matched pair/s using the codes given below.

             (a)    1, 2 and 3 only       (b) 1 and 2  only

 (c) 3 only                     (d)    (None of the above

45. Biogeographic realms are

1. Land and water provinces

2. Sicx major land provinces

3. Divided into biomes

Select the correct answer using the codes given below.

             (a)    1 and 2 only                            (b) 1 and 3 only

 (c) 1, 2 and 3 only                         (d) 2 and 3 only

46. Dominant plants of which type are highly adapted to recurring episodes of lightning-sparked fires?

1. Dry shrub lands

2. Grasslands

3. Southern pine forests

Select the correct answer using the codes given below.

            (a)    1 and 2 only                (b) 3 only

(c) 1 and 3 only                 (d) 1, 2 and 3

47.  Biome distribution corresponds roughly with regional variation in

1. Climate

2. Soils

3. Topography.

Select the correct answer using the codes given below

            (a)    1 only                         (b) 2 and 3 only

(c) 1 and 2 only                (d) 1, 2 and 3

48.Consider the following pairs:

1. Marine snow-deep cool, often nutrient-rich ocean water moves upwards

2. Upwelling –partiallt enclosed mix of sea water and fresh water

3. Eutrophication –nutrient enrichment of body of water; reduced transparency, Phytoplankton blooms

4. Estuary –basis of mid-oceans food webs

(a) 3 only                    (b) 4 only

(c) 1 and 2 only          (d) None of the above

49. Pollutants disrupt ecosystems because

(a) Their component  differ from those of natural substances.

(b) Only humans have uses for them.

(c)There is no mechanism to deal with them.

(d) Their only effect is on ecosystem, not humans.

50.Which of the following is /are responsible regional air pollution?

1. Smog

2. Acid rain

3. Ozone layer thinning

Select the correct  using the codes given below.

            (a)    1 only                       (b) 2 only

(c)1 and only                 (d) All of the above