What is the difference between Porifera and 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 is the difference between Coelenterata and Cnidaria?
Coelenterata has two subphyla namely cnidaria and Ctenophora. They are aquatic organisms. Cnidaria is a highly diverse group, which is a distinguishing feature called cnidocytes. Ctenophora is a less diverse group, which has comb plates.
What are the similarities and differences between animals in the phylum porifera and Coelenterata?
| Porifera | Ctenophora |
|---|---|
| Animals show cellular level of organisation. | Animals show tissue level of organisation. |
| They are asymmetrical. | They are radially symmetrical. |
| Digestion is intracellular. | Digestion is extracellular and intracellular. |
| Fertilisation is internal. | Fertilisation is external. |
What is the difference between Porifera and platyhelminthes?
Porifera (sponges) have specialized cells and an endoskeleton but lack true tissues and body symmetry. Cnidaria (jellyfish and corals) have tissue-level organization and radial symmetry. Platyhelminthes (flatworms) have a mesoderm cell layer, simple organ systems, cephalization, and bilateral symmetry.
What is the difference between Coelenterata and platyhelminthes?
The key difference between Coelenterata and Platyhelminthes is based on the germ layers of the organism. Coelenterates are diploblastic invertebrates whereas Platyhelminthes are triploblastic invertebrates.
What is common 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.
What are the main differences among porifera Cnidaria and ctenophora?
Cnidaria and Ctenophora are two types of phyla composed of coelenterates. Cnidarians live in both freshwater and marine habitats while ctenophores only live in the sea. Cnidarians are diversified animals than ctenophores.
Which are the distinguishing characteristics of coelenterates?
Characteristics. All coelenterates are aquatic, mostly marine, animals. The body form is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.
What is the difference between Coelenterata and Platyhelminthes?