Q1.Multiple Choice Questions
1. Which of these factors is not responsible for land degradation?
(i) Terrace Farming (ii) Deforestation (iii) Mining
2. In which type of farming two or more crops are grown together to prevent soil from being
washed away by rain?
(i) Contour Ploughing (ii) Intercropping (iii) Terrace Farming
3. Which of the following is not responsible for soil formation?
(i) Humus (ii) Agents of erosion (iii) Land Reclamation
4. The layer of soil that has maximum amount of humus is called
(i) Sub soil (ii) Parent Rock (iii) Top Soil
5. Only _____ percentage of the total land area is covered by land.
(i) 70% (ii) 25% (iii) 30%
Answers
Answer:
(I) terrace farming
(ii) intercropping
(ii) agents of erosion
(iii) top soil
(ii) 25%
Answer:
1. Terrace farming 2. Intercropping
3. Agents of erosion 4. Top soil 5. 30%
Explanation:
1.
(i) Terrace farming: Terracing is an agricultural practice that suggests rearranging farmlands or turning hills into farmlands.
(ii) Deforestation: Cutting down all the trees is responsible for land degradation.
(iii) Mining: the process of extracting useful materials from the earth also cause land degradation.
Option (i) is correct.
2.
(i) Contour ploughing is the farming practice or planting across a slope.
(ii) Intercropping is the farming of two or more crops together to prevent soil from being washed away by rain.
(iii) Terracing is an agricultural practice that suggests rearranging farmlands or turning hills into farmlands.
Option (ii) is correct.
3.
(i) Humus is a kind of soil made up of decayed organic material.
(ii) Soil formation is not possible by agents of erosion.
(iii) Land reclamation is the process of creating new land from oceans, seas, or lakes.
Option (ii) is correct.
4.
(i) Subsoil is the layer under the top soil.
(ii) Parent rock is the rock from which soil is formed.
(iii) Top soil is the soil consisting of maximum amount of humus.
Option (iii) is correct.
5.
Approx. 30% of area is covered by land.
Option (iii) is correct.
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