The sponge is considered the oldest animal phyla. They are multicellular, but have no tissues or organs. small pores are the gateway to a complex channel system where the sponge pumps a stream of water from which cells extract small particles of food. The sponge lacks true tissue, has no body symmetry, and is stemless. Types are categorized based on the presence and composition of spicules. White sponges are gentle and targeted at all skin types, while black sponges are ideal for oily skin, which is prone to acne and darkening. One sponge cell survives, replicates and creates entirely new sponge colonies. increase. They are so simple that they have no tissues or organs, but they do have specialized cells that perform certain functions such as protection, the creation of water streams, and the breakdown of pathogens.
ourmarinespecies.com Изображение: ourmarinespecies.com The sponge is considered the oldest animal phyla. They are multicellular, but have no tissues or organs. The name Polyfera means "pore bearer" in Latin. The surface of the sponge's body is covered with skin that is one cell thick.
Does the sponge have true tissue?
Does the sponge have true tissue? Unlike protozoa, sponges are multicellular. However, unlike higher metazoans, the cells that make up the sponge are not organized into tissues. Therefore, the sponge lacks true tissue and organs. Moreover, they have no body symmetry.
Why are sponges classified as animals?
Sponges are only classified as animals. They have cells that are independent of each other but work together within the colony. It is possible for a single sponge cell to survive and reproduce, creating a whole new sponge colony. They are so simple that they don't have any tissue or organ, but they have special cells
What does the sponge skin look like?
The surface of the body of the sponge is covered with 1 cell thick skin. This skin has numerous small pores and some large openings. The small pores are the entrance to a complex channel system where the sponge pumps a stream of water from which cells extract small particles of food.
Can a single sponge cell form a colony?
One sponge cell can survive and propagate to create a whole new sponge colony. They are so simple that they have no tissues or organs, but they do have specialized cells that perform certain functions such as protection, the creation of water streams, and the breakdown of pathogens.
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