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Q: Why are pinocoderm and choanoderm in sponges not considered as tissues?
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Do sponges have tissues?

No, sponges do not have true tissues like other animals. They are classified as Porifera and are considered the simplest animals, lacking specialized tissues and organs. Sponges have a porous body structure with specialized cells but no distinct tissue layers.


Do phylum poriferia have true tissues?

No, phylum Porifera (sponges) do not have true tissues. They are considered to be a simple multicellular organism lacking organized tissues and organs. Instead, their cells are loosely aggregated to form specialized structures for various functions.


Which knigdom can develop tissues?

All animals except sponges


What phylum do sponges blong to?

Sponges belong to the phylum Porifera. They are multicellular aquatic animals that lack tissues and organs.


What animal phylum is the least complex?

The phylum Porifera, which includes sponges, is considered to be the least complex in terms of organization and cell specialization. Sponges lack true tissues and organs, making them simple in structure compared to other animal phyla.


What does it mean when sponges have no true tissues?

Similar cells do not cooperate together.


What level of organization in missing in sponges?

tissues, organs, and organ system


What does body organs do sponges have?

sponges have no cells which means no tissues and that means no organs because of what the cycle is there would not be any organs in the body of a sponge


What is the only animal phylum that does not have tissues and symmetry?

The phylum Porifera (sponges) is the only animal phylum that lacks true tissues and symmetry. Sponges are simple multicellular organisms with specialized cells, but they do not have tissues that are organized into distinct structures like other animals. Additionally, sponges exhibit asymmetry rather than bilateral or radial symmetry found in other phyla.


What primitive group of animals has no true tissues and no specific distinct shape?

Sponges


Do sea sponges have a diploblastic or triploblastic body organization?

spoges are diploblastic because they have radial symmetryone's having rad. sym. are diplo.and one's having bilateral are triploblasticThis is a true statement, but what we find in animal biology is that there are exceptions to most of the rules. Sponges, or the phylum Porifera do not have true tissues. They are metazoa at their cellular grade of construction, not eumetazoa. If you look at phylogenic tree, you will see that sponges are not directly related to cnidarians, which are radial symmetric and diploblastic. Some sponges are radial symmetric, however the class of sponges, demospongiae, have many species of sponges which have leuconoid body-plans, which are asymmetrical. These are mostly freshwater sponges. So therefore, sponges are not triploblastic or diploblastic, they are neither since they possess no true tissues.


What kingdom and phylum do sponges belong to?

Sponges or poriferans are animals of the phylum Porifera.Sponges are divided into the following classes mainly according to the compositions of their skeletons:1.Calcarea2.Glass sponges3.Demosponges