Cestodes are distinguished from other flatworms by the absence of [CPMT 2001]
A) Nervous System
B) Digestive system
C) Excretory system
D) Reproductive system
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Cestodes are distinguished from other flatworms by the absence of Digestive system
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Answer:
Cestodes are distinguished from other flatworms by the absence of Digestive system
Option B
Explanation:
The digestive system is absent in the Cestoda of phylum Platyhelminthes. Platyhelminthes do have less developed digestive systems in the other classes like Turbellaria, the monogenea, the trematodes.
But, the cestodes have moist body surface. These, gets the nutrients from the host digestive system which leads to the nutrition of the parasite. The other systems are also not well developed in cestodes. But, they are present to some extent.
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