What are some differences between the phylum porifera and the phylum Cnidaria?

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.

What do porifera and Placozoa have in common?

1. They have asymmetry, or they’re superficially radially symmetrical. 2. They have 3 cell types (pinacocytes, mesenchyme cells, and choanocytes.)

What are the differences between sponges and cnidarians?

Sponges vs Cnidarians One interesting difference between sponges and cnidarians is that sponges lack tissue while cnidarians have tissues but not the organ systems. Sponges and Cnidarians are very primitive acoelomic invertebrates with very simple body structures. Both organisms are found in aquatic ecosystems.

What are the similarities and differences between animals in the phylum porifera and Coelenterata?

Summary – Porifera vs Coelenterata Both phyla consist of animals living in fresh and marine water. The main difference between porifera and coelenterata is that porifera members possess many pores in their bodies while coelenterate members possess only one opening in the body.

What are the main differences between the Cnidaria and the platyhelminthes phyla?

Cnidarians are diploblastic, whereas Platyhelminthes are triploblastic. Platyhelminthes possess bilaterally symmetrical, soft, worm-like elongated bodies, whereas cnidarian possess radially symmetrical, soft, medusa-like or polyp-like body forms. Cephalization is present in Platyhelminthes, but not in cnidarians.

What is one thing that makes an organism from phylum Cnidaria different than an organism from phylum Porifera?

Animals included in phylum Porifera are parazoans and do not possess true tissues. These organisms show a simple organization. Sponges have multiple cell types that are geared toward executing various metabolic functions. Cnidarians have outer and inner tissue layers sandwiching a noncellular mesoglea.

What are the different classes under phylum Mesozoa and Placozoa?

Phylum Placozoa includes only one species, Trichoplax adhaerens. Because this phylum is so small, it has no classes or orders assigned to it. The placozoans were formerly assigned to the phylum Mesozoa together with the dicyemids, orthonectids, and Salinella on the basis of their simple body organization.

What exactly are Placozoa?

The Placozoa /plækəˈzoʊə/ are a basal form of marine free-living (non-parasitic) multicellular organism. They are the simplest in structure of all animals.

What is the similarity between phylum porifera and phylum Cnidaria?

Porifera and Cnidaria are organisms which share similar characteristics with one another. -They are both multicellular, they consist of many cells working together. They are both eukaryotic, they have DNA in the form of chromosomes contained within a distinct nucleus.

How are sponges and protists different?

A sponge is, in essence, a multicellular organism with no organs or tissues, but with specialized cells, which distinguishes it from small multicellular protists.

How do Porifera animals differ from Coelenterate animals Class 9?

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How do animals of Porifera differ from animals of cnidaria?

Animals of the phylum Porifera have an asymmetrical body with the cellular level of body organisation, whereas cnidarians have radial symmetry and tissue level of body organisation. Cnidarians have nematocysts, whereas poriferans have choanocytes performing different functions.

What are the characteristics of Placozoa?

Phylum Placozoa contains just two species of very small (2 to 3 mm in diameter and only 15 to 20 µm in width), simply organized, non-bilaterian metazoan organisms that superficially resemble amoebas.

What are 4 interesting facts about phylum Porifera?

Gimme 4 facts about Phylum Porifera. 1. They have asymmetry, or they’re superficially radially symmetrical. 2. They have 3 cell types (pinacocytes, mesenchyme cells, and choanocytes.) 3. They have a central cavity or a series of branching chambers through which water circulates during filter feeding. 4. They have no tissues or organs!!!

Is Trichoplax adhaerens a placozoa?

Trichoplax adhaerens has since been widely accepted as the sole representative of the phylum Placozoa, a name coined by Grell in 1971. Several recent morphological and molecular phylogenetic analyses have indicated that many additional species likely exist within this phylum, including several higher order taxonomic groups.

Is Placozoa in the dibloblast clade?

In contrast, results from analyses of mitochondrial genomes and total evidence approaches suggested that animals form two clades based on the organization of their tissues, with Placozoa representing the basal lineage in the dibloblast clade, which also includes sponges, cnidarians, and ctenophores.