The main similarity between echinoderms and cnidarians is that
they are aquatic animals
.
How are sponges and cnidarians similar?
They both have
/share similar body structures
. Both can live in either fresh or sea water. Porifera are aquatic organisms known as sponges, while cnidarians are for example jellyfishes, corrals, etc. Poriferans are the most simple multicellular animal organisms.
Cnidarians and Echinoderms are closely related because they both have
radial symmetry
.
Explanation: Their body is composed of endoderm, mesoderm and ectoderm. While Cnidaria are Diblastica, so they are composed only from two layers: endoderm and ectoderm. In addition larvae of Echinoderms are bilaterally symmetrical and they become nearly-radial only as adults.
What do cnidarians and echinoderms have in common?
Cnidarians and echinoderms have
radial symmetry
; mollusks have bilateral symmetry. Cnidarians have no body cavity or cephalization; mollusks and echinoderms have a true coelom and cephalization.
What are two similarities and two differences between cnidarians and echinoderms?
What are two similarities and two differences between cnidarians and echinoderms? Cnidarians and echinoderms
have radial symmetry
; mollusks have bilateral symmetry. Cnidarians have no body cavity or cephalization; mollusks and echinoderms have a true coelom and cephalization.
What do echinoderms have in common?
All echinoderms have one thing in common:
radial symmetry
. This means that the creatures have appendages (or body construction) which point outward from the center of the body like the spokes on a bicycle wheel. Furthermore, these appendages usually occur in multiples of five, although there are a few exceptions.
What characteristics do sponges and cnidarians not have in common?
Sponges have specialized cells and an endoskeleton, but they
lack tissues and body symmetry
. Many live on coral reefs and have symbiotic relationships with other reef species. Cnidarians are aquatic invertebrates in Phylum Cnidaria. They include jellyfish and corals, both of which have radial symmetry.
Do sponges have stinging cells?
The sponges draw water carrying food particles into the spongocoel using the beating of flagella in the choanocytes. The food particles are caught by the collar of the choanocyte and brought into the cell by phagocytosis. … Nematocysts are “stinging cells” designed
to paralyze prey
.
How are porifera and Cnidaria differences?
Cnidaria and porifera are
two different phyla
. Cnidarians have Cnidocytes but not the poriferans. Cnidarians have well-organized organ systems but not the poriferans; on the other hand, poriferans have an efficient tunnel system made up of pores but not the cnidarians.
Do echinoderms have stinging cells?
Echinoderms include animals such as sea stars and sea urchins. … Cnidarians include animals such as jellyfish, and they all have
stinging cells in their tentacles
called nematocysts.
Which forms of echinoderms are bilaterally symmetrical?
The larvae of all echinoderms
are even now bilaterally symmetrical and all develop radial symmetry at metamorphosis. The starfish and crinoids still attach themselves to the seabed while changing to their adult form.
Are echinoderms Pseudocoelomates?
The protostome coelomates (acoelomates and pseudocoelomates are also protostomes) include the mollusks, annelids, arthropods, pogonophorans, apometamerans, tardigrades, onychophorans, phoronids, brachiopods, and bryozoans. Deuterostomes include the chaetognaths, echinoderms, hemichordates, and chordates.
Is jellyfish an echinoderm?
Phylum Echinodermata consists of starfish, sea urchins, sea cucumbers, and sand dollars. … Jellyfish, hydra, coral, and sea anemones belong to
phylum Cnidaria
.
Do echinoderms have a true Coelom?
In echinoderms like sea stars, every arm bears two rows of tube feet on the oral side. These tube feet help in attachment to the substratum. These animals possess a
true coelom
that is modified into a unique circulatory system called a water vascular system.
What do echinoderms and chordates have in common?
Similarities Between Echinoderms and Chordates
They show
bilateral symmetry
at any stage of their life cycle. Therefore, they belong to the clade Bilataria. Also, both are deuterostomes whose blastopore develops into the anus. And, both exhibit radial cleavage, which is indeterminate.
