0
The Planarian is a single celled organism with a rather large vacuole. In water, the water concentration outside the cell is higher than what is inside, causing the water to pass into the cell. At the risk of drowning, Planarian expel excess water through their vacuole to keep water levels stable. The force exerted by the exiting water propels the Planarian through the water.
What else can I help you with?
Why is water important to a planarian's survival?
important of planarians
Why do larger animals like a bullfrog require a circulatory system but animals such as a planarian do not?
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.
When was Lake Pedder planarian created?
Lake Pedder planarian was created in 1974.
How long can your planarian survive without food?
A planarian can live without food for about a week.
Is a planarian acoelomate pseudocoelomate or educoelomate?
A Planarian is an acoelomate, meaning they do not have a body cavity at all.
What are the two big dots on a planarian's head?
The two big dots on a planarian's head are its eyespots, which detect light and help the planarian navigate its environment. They are simple light-sensitive structures that allow the planarian to differentiate between light and dark. They also help the planarian avoid predators and find food.
Does planarian have backbone?
No.
Does a planarian have a backbone?
No.
Is a Planarian sessile?
No, a planarian is an example of a flatworm.
What feeding relationship is a planarian a part of?
A planarian is a flatworm and is parasitic which means that it feeds off living things.
Where is the pharynx located on a planarian?
The pharynx in a planarian is located on the ventral side of the body, towards the front end. It is a muscular tube-like structure that extends out of the body to help the planarian feed on prey.
How is the body plan of planarian different from an earthworm?
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.
