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select the features which is not applica...

select the features which is not applicable to Annelida.

A

Organ system level of organization

B

Closed type of circulatory system

C

Protenephridia for excretion

D

Tube within tube body plan

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question of which feature is not applicable to Annelida, let's analyze each option step by step: 1. **Organ System Level of Organization**: Annelids possess a complex organ system level of organization. They have specialized organs for different functions, which is characteristic of more advanced organisms. This feature is applicable to Annelida. 2. **Closed Type of Circulatory System**: Annelids have a closed circulatory system, meaning that their blood is contained within vessels. This is another feature that is applicable to Annelida. 3. **Protonephridia for Excretion**: Protonephridia are excretory structures found in some invertebrates, particularly in flatworms (Platyhelminthes). Annelids, however, utilize nephridia for excretion, not protonephridia. Therefore, this feature is **not applicable** to Annelida. 4. **Tube Within Tube Body Plan**: Annelids exhibit a tube within a tube body plan, which means they have a separate mouth and anus. This feature is applicable to Annelida. Based on the analysis, the feature that is **not applicable** to Annelida is **protonephridia for excretion**. ### Summary of the Solution: - Organ System Level of Organization: Applicable - Closed Type of Circulatory System: Applicable - Protonephridia for Excretion: **Not Applicable** - Tube Within Tube Body Plan: Applicable Thus, the answer is **Protonephridia for Excretion**.
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