1. (b) Forest
2. (c) A-horizon
3. (b) Topsoil
4. (a) (ii) and (iv)
5. Rock > Gravel > Sand > Silt > Clay
6. Sand, Silt, Clay
7. (a) Weathering
(b) Erosion
(c) Soil pollution
(d) Percolation
8. (a) Humus
(b) Soil Profile
(c) Horizon
(d) Loam
(e) Weathering
(f) Percolation
9. Situation ‘B’ is advantageous to plants because horizon A- and B are rich in water, minerals and humus.
10. Top Soil (A Horizon)
SubSoil (B Horizon)
C Horizon
Bed Rock
11.
| Column-I | Column-II |
| a) Earthworm | vi) A horizon of moist soils |
| b) Garden Lizard | iv)Surface of soil |
| c) Crab | i) Sand and beaches |
| d) Rodents | ii) Burrows in soil |
| e) Scorpion | iii)Deep, narrow holes in dry soils |
| f) Snails and snugs | v) Surface of shaded moist soils |
12. Weathering
Erosion
Plant
Horizon
Clay
Percolation
Sand
Mineral
Water Gravel
Silt
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