In summary, sponges (or sponges) do not have a true circulatory system like most animals. There are no hearts, veins, arteries, and no blood on the sponge. However, they achieve gas exchange and nutrient consumption through the movement of water.
Why does the sponge have no cardiovascular system?
The simplest animals, such as sponges (Porifera) and rotifera (Rotifera), require a circulatory system because diffusion allows for the proper exchange of water, nutrients, waste, and dissolved gas. plug. .. Instead, gas, nutrients and waste are exchanged by diffusion.
Do sponges have a body system?
Sponge lacks complex digestive, respiratory, circulatory, reproductive and nervous systems. Their food is trapped as water passes through the pores and through the vesicles.
How do sponges circulate nutrient oxygen and waste?
The sponge breathes by diffusion The sponge does not have the complex digestive, circulatory, and respiratory systems to move nutrients and oxygen around the body. Rather, each cell is independent and uses diffusion to carry out its own oxygen, food and waste processes.
What is an open circulation system?
The open circulatory system is a system in which blood does not tightly seal into arteries and veins, but fills the body and can be opened directly to the environment in places such as the digestive tract. The open circulatory system uses blood lymph instead of blood.
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