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Which describes the planarian body plan?

A. Planarians have radial symmetry.
B. They have gills for breathing underwater.
C. Planarians are asymmetrical.
D. They have a rudimentary brain and nerve cords that run the length of their body.



Answer :

GinnyAnswer

Final answer:

Planarians have a bilateral body plan with a rudimentary brain and nerve cords, enabling mobility in both land-based and aquatic environments.


Explanation:

The planarian body plan is characterized by bilateral symmetry, a rudimentary brain, and nerve cords running the length of their body. Planarians are not radially symmetrical; they have a definite right and left side. This symmetry allows for a high level of mobility in land-based and aquatic animals.


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