Animalscaretips
| Porifera | Cnidaria |
|---|---|
| 1. Animals are asymmetrical. | 1. Animals are radially symmetrical. |
| 2. Water canal system is well-developed. | 2. Water canal system is absent. |
| 3. They show the presence of choanocytes or collar cells. | 3. They show the presence of cnidoblasts or nematocytes. |
- What are the differences between poriferans and cnidarians?
- What is the difference between Cnidaria and Coelenterata?
- How are cnidarians different from poriferans in body morphology and tissue complexity?
- What are the differences between cnidarians and sponges?
- Why are Poriferans and cnidarians considered to be animals?
- What are the main differences between the Cnidaria and the platyhelminthes phyla?
- Why are Coelenterata called cnidarians?
- What are the main differences among porifera Cnidaria and Ctenophora?
- Why are cnidarians no longer classified as Coelenterates?
- What characteristics do Poriferans and cnidarians share?
- What is the difference between the two body forms exhibited by cnidarians give examples?
- Why are cnidarians more complex than sponges?
- How is Mesoglea in cnidarians different from Mesohyl in Poriferans?
- What are some purposes of sponges and cnidarians?
What are the differences between poriferans and cnidarians?
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 is the difference between Cnidaria and Coelenterata?
is that cnidarian is any of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum cnidaria while coelenterate is any simple aquatic animal bearing tentacles with nematocysts examples include jellyfish, coral, and anemones.
How are cnidarians different from poriferans in body morphology and tissue complexity?
Poriferans do not possess true tissues, whereas cnidarians do have tissues. Because of this difference, poriferans do not have a nerve net or muscle cells for locomotion, which cnidarians have.
What are the differences between cnidarians and sponges?
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.
Why are Poriferans and cnidarians considered to be animals?
The sponges and the cnidarians represent the simplest of animals. Sponges appear to represent an early stage of multicellularity in the animal clade. Although they have specialized cells for particular functions, they lack true tissues in which specialized cells are organized into functional groups.
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.
Why are Coelenterata called cnidarians?
Coelenterates are called Cnidarians because they contain specialized cells called cnidoblasts. They possess stinging structures called nematocysts.
What are the main differences among porifera Cnidaria and Ctenophora?
Porifera, Cnidaria, and Ctenophora are the most primitive clade of metazoans. They distinguish themselves from the other metazoans by their lack of bilateral symmetry. Inside their clade, each phylum is clearly distinguished by its general features.
Why are cnidarians no longer classified as Coelenterates?
Some, however, omit either the polyp or the medusa stage, and the parasitic classes evolved to have neither form. Cnidarians were formerly grouped with ctenophores in the phylum Coelenterata, but increasing awareness of their differences caused them to be placed in separate phyla.
What characteristics do Poriferans and cnidarians share?
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.
What is the difference between the two body forms exhibited by cnidarians give examples?
Cnidarians have two distinct body plans, the medusa (a) and the polyp (b). ... In these species, the polyp serves as the asexual phase, while the medusa serves as the sexual stage and produces gametes. However, both body forms are diploid. An example of cnidarian dimorphism can be seen in the colonial hydroid Obelia.
Why are cnidarians more complex than sponges?
Cnidarians (ni DER ee uhnz) belong to the phylum cnidaria. All of these have stinging cells. They are more complex than sponges because they have complex tissue, a gut, and a nervous system. They reproduce the same way as a sponge.
How is Mesoglea in cnidarians different from Mesohyl in Poriferans?
The main difference between mesoglea in cnidarians and mesohyl in poriferans is that mesoglea in cnidarians mainly composes of water and several substances including fibrous proteins, like collagen and heparan sulfate proteoglycans, whereas mesohyl in poriferans is a gelatinous matrix, mainly composing of collagen, ...
What are some purposes of sponges and cnidarians?
Sponge- the filtered water carries away wastes through an opening in the top of the sponge. Cnidarians- tentacles bring the prey to the mouth and then it ingests the food. Polyp- produces sperm and its released into the water and fertilize the eggs, which is also released into the water.
