Where does chemical digestion occur in earthworms?
Nutrition
| A | B |
|---|---|
| earthworms obtain nutrition in this way | food enters the mouth, aided by sucking action of pharynx |
| digestion occurs here in the amoeba | lysosome |
| chemical digestion begins here in the grasshopper | mouth |
| mechanical digestion occurs here in the earthworm | gizzard |
What type of digestive system do earthworms have?
Earthworms have a complete digestive system, one which has two openings, the mouth and the anus.
Do earthworms carry out chemical digestion?
Instead of a stomach, earthworms have a crop which stores food and connects to the gizzard. The food then moves to the intestine which releases chemicals to help further digest the food. The food is then absorbed through the walls of the intestine into the body.
What enzyme is found in earthworms?
Proteases, such as earthworm fibrinolytic enzyme, earthworm-tissue plasminogen activator, and earthworm plasminogen activator have been isolated from different species, and have been used as drugs to treat clotting diseases (Mihara et al. 1990). The protease is secreted from the alimentary tract in earthworms.
What is the boring organ of earthworm?
pellicle
Why do dead plants decay faster in soil containing earthworms?
Dead plants are able to decay faster in soil where earthworms live as earthworms disrupt the compact nature of the soil allowing more oxygen to reach the soil.
What do earthworms do for the soil?
Earthworms need the food and habitat provided by surface residue, and they eat the fungi that become more common in no-till soils. As earthworm populations increase, they pull more and more residue into their burrows, helping to mix organic matter into the soil, improving soil structure and water infiltration.