Which earthworm organ serves excretory function by excreting metabolic waste?

Many invertebrates (like earthworms) use a nephridium as their excretory organ.

I do not know

The earthworm organ that serves the excretory function by excreting metabolic waste is called the nephridium.

To find this answer, you can start by doing a basic search using any search engine, such as Google. Simply typing in keywords like "earthworm organ excretion" or "earthworm excretory system" will provide you with relevant information.

Once you have the search results, you can click on reliable sources such as scientific websites, biology textbooks, or academic articles to gather the necessary information. Look for specific sections or paragraphs that mention the excretory system or organs of earthworms.

In your case, you will come across information about the nephridium, which is the earthworm's excretory organ. The nephridia are long, tubular structures found in multiple segments of the earthworm's body. They are responsible for filtering the blood and extracting metabolic waste products, such as ammonia and urea, which are then excreted from the body.