What type of animal is Planaria?
Q: What type of animal is Planaria?
A: Planaria is a small aquatic genus of flatworm. The term is also used for other similar flatworms. They are fresh water animals which move in a smooth wave-like manner.
Q: How do Planaria reproduce?
A: To reproduce, a planarian releases eggs and sperm into the water, where the eggs get fertilized. Planarians can also reproduce through asexual reproduction, which involves splitting and regenerating parts that are missing.
Q: What does the nervous system of Planaria consist of?
A: The nervous system of Planaria consists of ganglia under the eyespots and a cord of nerves that run down the body, under the gut (ventral nerve cord). The three pairs of ganglia under the eyespots make an inverted U shape with nerves sticking out to the outside of the head so that it is more sensitive than other parts of its body.
Q: What does their digestive system consist of?
A: The digestive system of Planaria consists of a mouth, pharynx and gut cavity. Digestive enzymes are released from its mouth onto food to soften it before it gets sucked up into its stomach. From there, nutrients diffuse into the restof its body.
Q: Do they have circulatory or respiratory systems?
A: No, planarians do not have circulatory or respiratory systems; oxygen enters and carbon dioxide leaves their bodies by diffusing through their body wall instead.
Q: Do they have skeletons?
A: No, planarians do not have skeletons; they have an extendable crumpled muscle that allows them to move as well as three layers constructed with circular muscle fibers and longer muscle threads instead.
Q: How many ways can planarians reproduce?
A:Planarians can reproduce both sexually and asexually; sexually by having sex with another planarian and asexually by splitting and regenerating parts that are missing from their bodies
