Which of the following traits is not characteristics of echinoderms ?

Which of the following traits is not a characteristic of echinoderms ? I. They have a complete digestive system with two separate openings . II. They possess a complex haemal and perihaemal system for circulation . III. Removal of nitrogenous waste takes place through cloacal aperture . IV . Sense organs are poorly developed.

Which of the following traits is not the characteristic of echinodermat?

Which is not characteristic of echinoderms

Which is not characteristic of echinoderms

Which is not characteristic of echinoderms

Which of the following trait is not characteristic of frog:-

Which one of the followng traits is not characteristic of birds?

Which trait is not a characteristic of echinodermata ?