What is the origin of the term "flame cells" in Planaria?
A) Early sailors used these animals as kindling because their high ion content makes them extremely flammable.
B) Their high level of salt excretion seems to irritate or inflame the tissue near the site of excretion.
C) The beating of cilia in these cells looks like a flickering flame.
D) The cells have yellow and orange striations that give the appearance of fire.
E) None of the above
Correct Answer:
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