Question

kanika noticed that her potted plant was not growing healthily. She put three earthworms into the pot. After a few weeks, she noticed that her plants looked healthier. What could be the possible reason for this?

• A. The earthworms increased the air and nutrient content of the soil.
• B. The earthworms ate up the pests in the soil.
• C. The earthworms helped the plants to take in water.
• D. The earthworms allowed the plants to make food faster.

Answer 1

The correct option is A The earthworms increased the air and nutrient content of the soil.

• Earthworms help to increase the amount of air and water that gets into the soil. When they move through soil, they create spaces that help air, water and nutrients reach plant roots.They break down organic matter, like leaves and grass into things that plants can use.
• When they eat, they leave behind castings which is nothing but end product of worm digestion. Casts from earthworms, which include nitrogen, phosphorous, potassium, and magnesium, improve soil fertility.