The soil swallowed by the earthworm to form the worm cast is grouped up in the
Answer Details
The soil swallowed by the earthworm to form the worm cast is grouped up in the gizzard.
Earthworms are known for their ability to consume large amounts of soil and organic matter, digesting it in their digestive tract and excreting it as nutrient-rich castings. As the earthworm consumes soil, it is ground up and mixed with digestive fluids in the muscular gizzard.
The gizzard is a specialized part of the earthworm's digestive system that is responsible for breaking down food, particularly coarse particles like soil and plant matter. It contains tough, muscular walls that contract and grind the soil and organic matter, breaking it down into smaller pieces that can be more easily digested in the intestine.
As the soil is ground up in the gizzard, it is mixed with digestive fluids and formed into pellets, which are then passed through the intestine and out of the earthworm's body as worm castings. These castings are rich in nutrients like nitrogen, phosphorus, and potassium, making them an important component of healthy soil.
Based on the given options, the best answer is the gizzard, as this is the specific part of the earthworm's digestive system where soil is ground up and mixed with digestive fluids to form worm castings.