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Flatworms; Sea Stars; Sea Cucumber; Sea Urchins

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Which invertebrate phyla was first to show cephalization?

Platyhelminthes


Which phyla do not have cephalization?

Subregnum: ParazoaPhylum: PoriferaSubregnum: AgnotozoaSuperphylum: RadiataPhylum: BrachiopodaPhylum: BryozoaPhylum: DicyemidaPhylum: EntoproctaPhylum: Gastrotricha


Do nematodes show cephalization?

Phylum Nematoda does exhibit cephalization. Cephalization is a evolutionary trend in development in which the sensory and neural organs of a species becomes concentrated on one end of an organism.


A concentration of sense organs and nerve cells in anterior end of the body known as?

Cephalization


Does a hydra have cephalization?

A hydra does not have cephalization.


Annelids show what by having bilateral symmetry?

cephalization for segmented worms, but idk about anything else


What is the cephalization of a mollusca?

The cephalization of a mollusca could possibly describe the arrangement of neurons in the front end of the animal.


What does annelids show by having bilateral symmetry with an anterior head where most sense organs are found?

Cephalization


What invertebrate group was the first to show cephalization?

The first invertebrate group to exhibit cephalization was likely the flatworms (phylum Platyhelminthes). Cephalization is the evolutionary process of concentration of sensory structures (such as eyes and other sense organs) and nervous tissues at the anterior end of an organism, forming a head region.


Are Cnidarians in cephalization?

Cephalization means formation of a head. Cnidarians have no head, so no.


How do animals with cephalization respond differently to the environment than animals without cephalization?

Animals with cephalization respond more quickly and in more complex ways.


Do bivalves show cephalization of a clam?

No - class Bivalvia of phylum mollusca have no head examples are clams, oysters, and mussels