Correct option is C
✅ (c) Capillary pore
· Clay soils have a high proportion of capillary pores, which retain water against gravity.
· These small pores are responsible for high water-holding capacity but slow drainage.
· Essential for moisture availability to plants in fine-textured soils.
❌ (a) Medium pore
· Medium pores are more characteristic of loamy soils, not predominant in clay.
❌ (b) Macro pore
· Macro pores (large pores) are common in sandy soils, facilitating quick drainage.
· Clay soils are deficient in macro pores.
❌ (d) Coarse pore
· Coarse pores are synonymous with macropores, absent in significant quantity in clay soils.
· Incorrect choice.