bileteral symmerty
Arial symmetry
Most sponges of the Demospongiae type are considered asymetrical. (Not having symmetry.)
Dugesia and flukes are both types of flatworms. They both only have one opening that holds both the process of ingestion and secretion. The mouth of the Dugesia is on the ventral side, close to to middle of the body. While the fluke's mouth appears to be closer to what one would assume is the head.
Flatworms exhibit bilateral symmetry, which means that their body can be divided into two symmetrical halves along a single plane. This type of symmetry allows for the development of more complex body structures and directional movement.
Annelids exhibit bilateral symmetry, where the body can be divided into two equal halves along a single plane. This symmetry allows for streamlined movement and sensory coordination in these segmented worms.
The type of body plan a Dugesia has is an acoelomate body. This elongated body lacks internal structures for holding internal organs.
Dugesia golanica was created in 1991.
Dugesia sagitta was created in 1861.
Dugesia notogaea was created in 1998.
Dugesia japonica was created in 1964.
Dugesia aenigma was created in 1984.
Dugesia sicula was created in 1948.
Dugesia tubqalis was created in 2012.
Dugesia, a genus of planarian flatworms, typically lives in freshwater environments such as ponds, lakes, and streams. They are carnivorous, feeding on small organisms like insects and worms. Dugesia are known for their ability to regenerate lost body parts, making them resilient creatures in their ecosystem.
One type of symmetry is rotation. The second type of symmetry is translation. The third type of symmetry is reflection.
Dugesia will exibit negative phototaxis. Look it up in a zoology book. here is an article as well. http://www.helium.com/items/1079086-the-observation-of-dugesia-in-response-to-light-and-gravity
Bilateral Symmetry