(1)
The echinoderms are related to chordates by their similarity in the development of
Answer: coelom
Answer: coelom
Answer: sea urchins
Answer: Holothuroidea
Answer: None of these
Answer: Antedon (Feather star)
Answer: Schizocoelic coelom
Answer: Starfish
Answer: Spines
Answer: Carnivorous
Answer: echinopluteus
Answer: structure of the ambulacral groove
Answer: Holothuroidea
Answer: Haemal system
Answer: Notochord
Answer: Pharyngotomy
Answer: All the chordates and higher invertebrates
Answer: annelids, arthropods and vertebrates
Answer: Vertebrates
Answer: Herdmania
Answer: brain ,skull, sense organs and also jaws