Question

Arthropoda is differentiated from annelids by:

• A. Segmented body
• B. Absence of nephridia
• C. Eyes
• D. None of the above

Answer 1

The correct option is B Absence of nephridia

• Both annelids and arthropods have internally segmented bodies.
• Annelids excrete through nephridia while Arthropods excrete through malpighian tubules.
• Some annelids have ocelli that function as eyes that detect the direction from which light is coming. Arthropods have compound eyes that form apposition images.
• Arthropods do not have nephridia that are present in annelids.

So, the correct answer is 'Absence of nephridia'.