Soils are mixtures of rock particles, organic matter, air, and water that support plant growth. The type of soil depends on the size of its particles, with sandy soil having large particles and many air gaps allowing for good drainage, clay soil having tiny particles and few air gaps so it drains poorly, and silt soil being intermediate. Different plant types grow best in different soil types depending on their drainage and composition.

1. SoilSoil
Soils are mixtures of bits of rocks, dead
plants and animals ( humus ), air and
water, dissolved minerals
Different plants grow better in
different types of soil.

2. Sand soil Silt soil Clay soil
Large
particles
Medium
particles
Tiny
particles
Size of
particles
Air gaps
Water
drain
Large air gaps
Medium air
gaps
Few air gaps
Water drains
easily ( high
permeability )
Water drains
slowly
( permeable )
Water does
not drain
easily ( low
permeability )