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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.
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.
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.
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 does it mean when sponges have no true tissues?
Similar cells do not cooperate together.
What primitive group of animals has no true tissues and no specific distinct shape?
Sponges
How are sponges and coelentrates different?
Sponges are of the phylum porifera and are assymetrical invertebrates that have no true tissues due to a lack of cell specialization. Coelenterates are any of the phylum cnidariathat have radial symmetry and are invertebrates. Coelenterates include corals, sea anemones, jellyfish, and hydroids.
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.
Which animal phylum has the lowest structural organisazation?
The phylum Porifera, which includes sponges, has the lowest structural organization among animal phyla. Sponges lack true tissues and organs, instead consisting of loosely organized cell layers that perform basic functions like feeding and reproduction.
What phylum is most primitive?
Porifera (sponges) is considered one of the most primitive phyla because they lack true tissues and organs, and exhibit a simple body plan without symmetry.
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 difference between freshwater and marine sponges. Why is there no terrestrial sponge?
Freshwater sponges are delicate in structure, growing as encrusting or branching masses. They usually appear greenish because of the algae that live on them. Freshwater sponges may attain a volume of more than 2,500 cubic centimeters (150 cubic inches). Marine sponges are natural bath sponges (with living cells removed) that we all are familiar with. They actually are the oldest and simplest animals that have been living on earth for millions of years. Marine sponges are filter-feeding animals because all adult sponges are sessile and can't move around benthic surface. Marine sponges have no true tissues or organs, just constructed with layers of cells even without nervous system. Marine sponges come in different but striking colors, bright red, purple, yellow, and brown, etc. These colors and some are toxic as well may help them defend from sponge eating invertebrates and some fishes. Some other small marine organisms, fishes, and microscopic organisms often call marine sponges their homes. There are no terrestrial sponges because they are filter feeders obtain from water particles.
