Perimeter
Animals in this part of the animal kingdom are commonly known as sponges. These are usually marine and asymmetrical animals. These are primitive multicellular animals.
( : Porifera ) whose common name is Sponge ( : Sponge )
Is a kind of multicellular animal. The word Porifera is a combination of these two words. In 1836, the scientist Grant named the first circumference episode.
Features
- The multicellular body lacks specific tissues, tissues, organs and organ systems.
- Mainly unequal body, i.e. the body cannot be divided equally in any aspect.
- The ducts of the body are present which is a unique feature of this episode.
- Inside the body is a wide cavity called spongocytes covered by quinocyte cells which is exposed on the outside through a large pore called the occiput.
- The body wall has numerous small pores called ostia, which are formed by cells called porocytes.
- Mature animals are immobile, meaning they are permanently stuck in an infrastructure.
- The body does not have pores or anus.
- They live alone or in colonies.
- All are aquatic animals, most of which are marine and some species are freshwater
- These are asilomatous or silomless animals
