Assertion: sponge's system | /r/HasProperty | nervous
Facets:
Source sentences:
text: Communication and Perception As in all Porifera, fire sponges lack a nervous system and therefore have little ability to communicate or perceive the outside environment.
text: They do not move when they are touched because they lack the nervous system.
text: Sponges have no nervous systems, their middle jelly-like layers have large and varied populations of cells, and some types of cells in their outer layers may move into the middle layer and change their functions.
text: Sponges are primitive multicellular animals that have no digestive system, no circulatory system, and no nervous system.
text: Sponges have no nervous system.
text: Sponges have no nervous system.
text: An interesting point to note about sponges is that they don’t have a well-developed digestive system, circulatory system or nervous system.
text: Sponges have no nervous system.
text: Sponges are considered the most primitive members of the animal kingdom, since they lack a nervous system and differentiated body tissues or organs.
text: Sponges also lack symmetry, true organs, a digestive or respiratory system, a nervous system, muscles, and a true mouth.
text: Sponges have no nervous system or organs like most animals do.
text: Sponges are considered the most primitive members of the animal kingdom, since they lack a nervous system and differentiated body tissues or organs.
text: Sponges are very primitive animals, lacking organs and a nervous system.
text: Sponges are primitive multi-cellular animals that have no digestive system, no circulatory system, and no nervous system.