Causes of labored breathing include: 1  Severe metabolic acidosis, particularly diabetic ketoacidosis (DKA) but also renal failure. 2  Cardiac disease. 3  Respiratory failure.
A planarian is one of many flatworms of the Turbellaria class. It is also the common name for a member of the genus Planaria within the family Planariidae.Sometimes it also refers to the genus Dugesia. Planaria are common to many parts of the world, living in both saltwater and freshwater ponds and rivers.n asexual reproduction, the planarian detaches its tail end and each half regrows the lost parts by regeneration, allowing neoblasts (adult stem cells) to divide and differentiate, thus resulting in two worms. Some species of planaria are exclusively asexual, whereas some can reproduce both sexually and asexually.
Planarians have both ovaries and testes. To reproduce, they can have sex with another planarian; this is called sexual reproduction. Another way planarians reproduce is called asexual reproduction. This is when a planarian splits and regenerates the parts that are missing.he term is also used for other similar flatworms. They are fresh water animals which move in a smooth wave-like manner. Planaria are free-living. They can live in fresh water or very damp soil, depending on the type.