SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2, 000
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200, 000
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20, 000
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200
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Detailed explanation-1: -More than 20, 000 flatworm species have been described.
Detailed explanation-2: -1.8 Platyhelminthes The flatworms come under Phylum Platyhelminthes and comprise a very diverse group of worms, with 12, 821 species described (WoRMS, 2016). The parasitic flatworms, such as tapeworms and liver flukes, are included within this large phylum.
Detailed explanation-3: -There are more than 20, 000 species of flatworms. The group includes freshwater planarians and colorfully patterned marine flatworms. It also contains parasitic worms that live inside the bodies of an estimated 200 million humans around the world.
Detailed explanation-4: -It should now come as no surprise to you that all of the animals in the Platyhelminthes phylum are flatworms! There are three main types of flatworms: flukes, planarians, and tapeworms.
Detailed explanation-5: -Acoel flatworms, also called just acoels, consist of 370 species living in the ocean. They got their name, because they lack the coelom, the fluid-filled body cavity that holds the internal organs in more complex animals.