What do all Ecdysozoans have?

The Ecdysozoans are the most diverse group of animals, containing the nematode worms and the arthropods. These organisms have an external covering called a cuticle that protects their soft internal organs from water loss and the outside environment.

What defines Ecdysozoa?

Ecdysozoans are a morphologically heterogeneous group of animals which have a cuticle and grow by molting and include the arthropods and nematodes.

Which statement about ecdysozoans is true?

Which statement about ecdysozoans is true? All possess a cuticle, and their Hox genes indicate they are monophyletic. Which group of arthropods has the most body segments?

What makes ecdysozoans particularly vulnerable to?

What makes ecdysozoans particularly vulnerable to prey? Shedding of protective cuticle or exoskeleton.

What animals go through Ecdysis?

relation to molting shape (see metamorphosis) is called ecdysis; it occurs in such invertebrates as arthropods, nematodes, and tardigrades.

What makes Ecdysozoans particularly vulnerable to?

Do all Lophotrochozoans have Lophophores?

Lophophorata such as Brachiozoa and Bryozoa have lophophores, while members of Trochozoa such as molluscs and annelids have trochophores, although some may have none.

What is the taxonomical organization of the ecdysozoans?

2 Explain the taxonomical organization of the ecdysozoans. The ecdysozoans are represented by eight very different phyla of protostomes: phylum Nematoda (roundworms) and phylum Nematomorpha (horsehair worms) constitute a group called the Nematoidea.

What is the advantage of Ecdysis molting in arthropods such as crustaceans?

What is the advantage of ecdysis (molting) in arthropods such as crustaceans? Molting is initiated hormonally when inhibiting hormones are decreased and molting hormones are increased. During the pre-molt phase, the old cuticle thins and separates from the epidermis.