Soils and Topography

A. Natural body which is composed of a mixture of organic and inorganic matter in which plants and other living organism grow
B. The unconsolidated mineral material on the surface of earth that serves as natural medium for land plants
C. Both (a) & (b)
D. None of these

A. Productive capacity
B. Supporting power
C. Monitor storage capacity
D. Nutrients availability
E. All of the above

A. Soil structure
B. Soil texture
C. Porosity
D. Soil colour
E. All of the above

A. Water holding capacity
B. Aeration
C. Porosity
D. Heat transfer
E. All of the above

A. Basis: The classification of soil structure is based on size shape and stability of soil aggregates. The soil aggregate may be of following forms
B. Major shape: Spheroidal, plate like, bloke like, prism like
C. Both (a) & (b)
D. None of these

A. Single grained: Where each soil particles function as an individual e.g. Sandy soil
B. Massive: Clay fills the spaces and pores so that the soil becomes dense and forms clods
C. Both (a) & (b)
D. None of these

A. Key to fertility of soil
B. Important factor in soil erosion
C. Both (a) & (b)
D. None of these

A. Course textured soil (more sand particles)
B. Medium textured soil (qual proportion of very fine sand, silt and clay)
C. Fine textured soil (silt and clay)
D. All of the above

A. Composed of mineral quartz
B. Larger is size
C. Have large pores due to which they
D. Do not retain water/nutrients
E. All of the above

A. Intermediate in size between sand and clay
B. Powdery feeling
C. More plasticity than sand
D. All of the above