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What primitive group of animals has no true tissues and no specific distinct shape?
Sponges
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 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.
Does phylum porifera have a heart?
No, they are sponges. Actually they are the only animal phyla that does not have any "true tissues".
What is the phylum of scypha?
The phylum of scypha is Porifera, also known as sponges. Sponges are simple, multicellular aquatic animals that lack true tissues and organs.
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
Are sponges diploblastic?
Yes. they have two germ layers - or a two - layerd body wall. The epidermis and gastrodermis. Actually sponges lack true tissues and are therefore not diploblastic.
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.
What system do the cnidaria and comb jellies have that sponges lack?
Despite neither jellies nor sponges having central nervous systems, jellies have true tissues. The cells in jellyfish are also bound together, unlike in sponges.
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.
Are Sponge cells are organized into tissues and organs?
No, sponges do not have true tissues or organs. They are multicellular organisms but lack differentiated tissues. Instead, they have specialized cell types that work together to carry out various functions, such as feeding and reproduction.
What is the phylum of a red beard sponge?
The red beard sponge belongs to the phylum Porifera, which consists of aquatic animals known as sponges. Sponges are simple multicellular organisms that lack true tissues and organs.
