What is the difference between Coelenterata and Porifera?

Porifera possess an exoskeleton while coelenterata do not possess exoskeleton. The body of Porifera have no symmetry and coelenterata have radially symmetrical bodies. Porifera do not possess a nervous system and coelenterata have a nerve net in between the two cell layers.

What is the difference between Porifera 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?

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 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.

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 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 are characteristics of phylum Porifera?

Characteristics of Phylum Porifera Only a few are found in freshwater. They are either radially symmetrical or asymmetrical. Their body is usually cylindrical. The scleroblast secretes spicules while spongin fibres are secreted by spongioblasts.

Does Porifera have a Coelom?

Primitive phyla without a true coelom include the Porifera and Coelenterata (Cnidaria).

What are characteristics of Coelenterata?

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.

Why is Coelenterata also called Cnidaria?

Phylum Coelenterata is also known as Cnidaria due to the presence of cnidoblasts or cnidocytes on the tentacles and body surface. They contain stinging capsules called nematocysts.

What development do the Coelenterata have over Porifera?

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. Porifera animals do not show symmetry and locomotion while coelenterata animals show radial symmetry and locomotion.

What do Porifera and Cnidaria have in common?

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.