Question

The particles in soil are important because they __________.

A. eliminate spaces for air and facilitate drainage
B. fill spaces and keep oxygen out of the soil
C. supply humus needed by plants
D. are composed of nitrogen needed by plants
E. are charged and hold ions needed by plants

Answer 1

Soil particles hold ions needed by plants through their negative charge and play a critical role in delivering essential nutrients for plant growth. Correct option is E.

Step-by-step explanation:

Soil particles are important because they are charged and hold ions needed by plants. The negative charge of soil particles allows them to attract and retain positively-charged nutrient ions such as calcium, potassium, sodium, ammonium, and magnesium. These nutrients are vital for plant growth and are delivered to plants through the soil particles.