Gujarat BoardEnglish MediumSTD 7ScienceSoil3 Marks
Question
Soil particles size is an important factor to determine the property of soil. Explain?
✓
Answer
Different particles of soil have different sizes which affect its properties like:
Sand particles are quite large and having large spaces between them. These spaces are filled with air. Water can drain quickly through these spaces. So, sandy soils tend to be light, well aerated and rather dry.
Clay particles, being much smaller, pack tightly together, leaving little space for air. So, clay soils have little air. But they are heavy as they hold more water than the sandy soils.
Loamy soil is a mixture of sand, clay and another type of soil particle known as silt. The size of the silt particles is between those of sand and clay. The loamy soil also has humus in it. It has the good water holding capacity for the growth of plants.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.