Is the sponge a plant or an animal, or is it synthetic?
. sponge is brown, black or yellow lumps, their surface is covered with water, water in the growth of many small flagellate cells
Sponges are actually one of the most primitive and lowly multicellular marine animals
These flagella constantly sway and suck the sea into the body and then out of the body. The tiny creatures in the sea are left behind to become sponges
Their sensory cells and nerve cells were not formed and reacted very slowly to the outside world
If we do not pass the microscope, it is difficult for us to see the movement of the sponge with the naked eye, which is one of the reasons why it is easy to mistake the sponge for a plant
