name one anatomical feature (other than symmetry) that distinguishes a planarian from a hydra.
Immersed means partially in water and submerged means completely covered.
One possible answer: Blank 1 = 3150 Blank 2 = 10 Blank 3 = (2/315) = approx 0.006349
7 times blank = 2 times blank
dimension
A Planarian is an acoelomate, meaning they do not have a body cavity at all.
The phylum name for planarians is Platyhelminthes, which includes flatworms like the planarian. They are characterized by their flattened body shape and bilateral symmetry.
REGERATION
REGERATION
planarian
The flat worm must live in water, while the earthworm lives in and around the earth. The planarian detects light. The planarian can be split in two, separating left and right (and live). The earthworm can be split front and back (and live). The reverse is not true. Etc.
Diffusion is inadequate to move gases through the surface and into all parts of a larger animal body. However, diffusion alone is sufficient to move gases in and out of the thin body of a planarian.
Lake Pedder planarian was created in 1974.
yes like sponges and planarian and the earthworm can regenerate the last half of its body when sliced.
A planarian can live without food for about a week.
No.
No.