By their activity in the soil earthworms offer many benefits Which of the following are the benefits...........

Environment and Ecology Sustainable Development

Download Solution PDF

By their activity in the soil, earthworms offer many benefits. Which of the following are the benefits?

1. stimulating microbial activity

2. mixing up the soil

3. decreasing infiltration

Select the correct answer using the codes given below.

1 and 2 only

1 and 3 only

2 and 3 only

1, 2 and 3

छोटे Courses बड़े Results

Master Sustainable Development

Prepare through Micro-courses

Try Now

Explanation:

Earthworms increases infiltration and not decrease them. Earthworms dramatically alter soil structure, water movement, nutrient dynamics, and plant growth. Stimulate microbial activity. Although earthworms derive their nutrition from microorganisms, many more microorganisms are present in their feces or casts than in the organic matter that they consume. Mix and aggregate soil. As they consume organic matter and mineral particles, earthworms excrete wastes in the form of casts, a type of soil aggregate. Increase infiltration. Earthworms enhance porosity as they move through the soil. Some species make permanent burrows deep into the soil. Read more – http://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/soils/health/biology/?cid=nrcs142p2_053863