The osmoregulatory/excretory system of an earthworm is based on the operation of metanephridia.

Here's a step-by-step explanation:

1. Earthworms belong to the phylum Annelida, and their excretory system is composed of a pair of metanephridia in each segment of the body.

2. Metanephridia are tube-like structures that open internally into the coelom (the main body cavity in many animals) and externally to the outside of the body.

3. The internal opening of the metanephridium is surrounded by a funnel-like structure called the nephrostome, which filters waste materials from the coelomic fluid.

4. These waste materials are then passed through the metanephridium and excreted outside the body.

5. In addition to waste excretion, metanephridia also play a role in maintaining the earthworm's water and salt balance, a process known as osmoregulation.

So, the correct answer is b) metanephridia.

Question

The osmoregulatory/excretory system of an earthworm is based on the operation of metanephridia.

Here's a step-by-step explanation:

1. Earthworms belong to the phylum Annelida, and their excretory system is composed of a pair of metanephridia in each segment of the body.

2. Metanephridia are tube-like structures that open internally into the coelom (the main body cavity in many animals) and externally to the outside of the body.

3. The internal opening of the metanephridium is surrounded by a funnel-like structure called the nephrostome, which filters waste materials from the coelomic fluid.

4. These waste materials are then passed through the metanephridium and excreted outside the body.

5. In addition to waste excretion, metanephridia also play a role in maintaining the earthworm's water and salt balance, a process known as osmoregulation.

So, the correct answer is b) metanephridia.

Knowee AI · Accepted Answer

The osmoregulatory/excretory system of an earthworm is based on the operation of metanephridia.

Here's a step-by-step explanation:

1. Earthworms belong to the phylum Annelida, and their excretory system is composed of a pair of metanephridia in each segment of the body.

2. Metanephridia are tube-like structures that open internally into the coelom (the main body cavity in many animals) and externally to the outside of the body.

3. The internal opening of the metanephridium is surrounded by a funnel-like structure called the nephrostome, which filters waste materials from the coelomic fluid.

4. These waste materials are then passed through the metanephridium and excreted outside the body.

5. In addition to waste excretion, metanephridia also play a role in maintaining the earthworm's water and salt balance, a process known as osmoregulation.

So, the correct answer is b) metanephridia.

The osmoregulatory/excretory system of an earthworm is based on the operation of…a) protonephridia.b) metanephridia.c) Malpighian tubules.d) nephrons

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The osmoregulatory/excretory system of an earthworm is based on the operation of…

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