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Question
Which of the following is/are NOT the key characterists of the phylum Platyhelminthes?
Which of the following is/are NOT the key characterists of the phylum Platyhelminthes?
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Solution
The correct option is D Tentacles
Organisms belonging to phylum Coelenterata show more complex body design as compared to phylum Porifera, than platyhelminthes. Their body is made up of two layers of cells. One layer makes up the cells on the outside of the body. Whereas the other makes the inner lining of the body. These organisms bear tentacles. These tentacles contain cnidoblasts (stinging cells) which help in defense and offense. Members of phylum Platyhelminthes have dorso-ventrally flattened body. Hence, are also known as flatworms.
Organisms belonging to phylum Coelenterata show more complex body design as compared to phylum Porifera, than platyhelminthes. Their body is made up of two layers of cells. One layer makes up the cells on the outside of the body. Whereas the other makes the inner lining of the body. These organisms bear tentacles. These tentacles contain cnidoblasts (stinging cells) which help in defense and offense. Members of phylum Platyhelminthes have dorso-ventrally flattened body. Hence, are also known as flatworms.
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