Q42 / 180 · NEET 2018 · Botany

Match the items given in Column I with those in Column II and select the correct option given below:
 
  Column – I   Column –II
a. Eutrophication i. UV-B radiation
b. Sanitary landfill ii. Deforestation
c. Snow blindness iii. Nutrient
d. Jhum cultivation iv. Waste disposal

  • Correct answer
    A
    a - iii, b - iv, c - i, d - ii
  • B
    a - i, b -iii, c - iv, d - ii
  • C
    a - ii, b - i, c - iii, d - iv
  • D
    a - i, b - ii, c - iv, d - iii

Solution

Eutrophication is the nutrient enrichment of water bodies containing an excessive population of phytoplankton. This leads to an overgrowth of flora and fauna in the water body until the organic deposition makes it warmer and shallower. Warm-water population increases and the final stage is its conversion into a land.
Sanitary Landfill is a method of solid waste disposal in which the waste material is buried in the pits dug on the ground and later they get covered by soil.
Snow blindness is caused due to UV-B radiations exposure. These radiations can reach the earth surface due to the depletion of the ozone layer.
In Jhum cultivation, the land is cultivated temporarily and then abandoned so that, it can revert to its natural vegetation. It is a long-term process and usually leads to deforestation.

a - iii, b - iv, c - i, d - ii

Hence, the correct answer is option: 'A'.

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