Porifera (Sponges)

1. Multicellular organism
2. Eukaryotic organism
3. Heterotroph
4. diploblastic animal
5. radial symmetry
6. Mouth and digestive cavity absent
7. asexual and sexual reproduction
8. Mostly live in marine water
9. Skeleton is made up of calcareous
10. non motile animals
11. have cellular level of organisation
12. their body have number of pores
13. digestion is intracellular
14. muscle and nerve cell are absent
15. contain special type of cell called collar cell or choanocytes
16. appendages are absent
17. ex:- sycon, spongilla

ostium

No. Sponges only have a few different types of cells and are among the most divergent animal species. They are sessile and were formerly thought to be plants.

Porifera (pōrĭf'ərə) [Lat.,=pore bearer], animal phylum consisting of the organisms commonly called sponge. It is the only phylum of the animal subkingdom Parazoa and represents the least evolutionarily advanced group of the animal kingdom. All adult sponges are sessile (nonmotile), and nearly all are marine; there are four families of freshwater sponges. Sponges are subdivided into three classes.

deuterostome

^This is actually false porifera are not segmented animals so thay don't form mouth first(Protostones) or butt first (Deuterostomes) so they are under developed being N/a

If sponges become extinct, the organisms that depend on them for food and sheltor will be in difficult time.

Many fishes live in the reefs formed by sponges, some eat the organic matter and diatoms on the sponges, some seek sponges for breeding.

So if sponges are to extinct , these creatures would face the same danger and there would be imbalance in the marine food chain!

Any imbalance in our ecosystem is finaly going to affect us humans!

They're invertebrates. They have no skeletal structure at all

Kingdom: Animalia

Phylum: Cnidaria

Subphylum: Medusozoa

Classes: Cubozoa, Hydrozoa, Polypodiozoa, Scyphozoa, Staurozoa

There are over 200 species of Scyphozoa, about 50 species of Staurozoa, about 20 species of Cubozoa, and in Hydrozoa there are about 1000-1500 species that produce medusae (and many more hydrozoa species that do not).

The Poriferans shed spicules and produce toxins.

This is from www.reefnews.com: This Purple Tube Sponge colony lives on a dead coralhead. The coral may have succombed to the algae and sponges that grew over the polyps and killed them. Now the skeleton of the coral supports a variety of sponges and algae. Sponges are colonies of thousands of individual cells. The cells work together, pumping water through the body of the sponge. The tall tube is in the shape of a "chimney." This chimney is an exhaust tube, where the water pumped by the sponge comes out. The sponge eats the plankton it filters out of the water as the water is pumped through the body of the sponge. Animals that eat sponges and algae help to keep a healthy balance on the reef. If there are too few of these animals, then the sponges and algae may take over. Examples of algae eaters are Parrotfishes, Sea Urchins, and Crabs. Examples of sponge eaters are Hawksbill Turtles and Loggerhead Turtles.

Red beard sponges are eaten by Sea slugs, starfishes, and sea turtles.

Sponges are aquatic animals, living mostly in the marine environment. They have neither brain nor central nervous system and maintain plant like qualities. You can find more the answers from the bioesti.cn website. Hope you like it.

Sponges are not really a source of food to humans. You can eat them but I suggest you don't. It is not normal. They are a source of food to some animals like certain sea slugs, certain fish, and I think some turtles.

sponges are many holes or pores in them which the use for feeding and such.they also belong to the phylum porifera,which means "pore bearing."

Cells could live and possibly reform a new sponge~

(PLATO)

:3

Some species (Chondrilla) do destroy coral reefs.

Water is held in the sponge until it is released.

Sponges are asymmetrical, although a few species have nearly radial symmetry.

The water contains all the food and oxygen they need, and they circulate the water thru their pores. Also, I dont know if this helps, but they keep food inside their bodies and from going out their pores with their collar cells that acts as little whips.

What supports a sponge it its agility to love god with all its tentacles, rays, and hole on the bottom of itself.

Depending on the type of sponge, they can reproduce either sexually or asexually. Sexual reproduction of a sponge is when a male sponge releases a large cloud of sperm in the water and when it passes by a female sponge of the same species it passes through special cells called archaeocytes. This funnels the sperm toward the egg cells already in the female sponge to create the larvae. Depending on the type of sponge, the female will either release the larvae soon afterward or store them and release them later. Asexual reproduction of a sponge happens when each individual sponge produces buds, or packets of several cells inside a protective covering which later develops into adult sponges.

Porifera are sea sponges. They have no symmetry (asymmetrical) and they are one of the most basic forms of life. They have a 2 cell layer wall made of collar cells, spicules, amoeba like cells, and a layer of epidermal like cells. The spicules and the amoeba like cells are in between the layer of collar cells and epidermal cells. Sponges also have pores throughout their structure.

Porifera include freshwater sponges as well of marine varieties. Freshwater sponges are common although not obvious. Frequently they are green in color due to included algae.

First of all, porifera do not breathe: they respire. Oxygen diffuses through the cells

spicules