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B
Is a triploblastic poriferan
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C
Has numerous oscula for entry of water
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D
Lacks flagellated collar cells in body
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Solution
The correct option is B Is a triploblastic poriferan The correct answer is option B.
The body wall of a common sponge consists of three layers. All the sponges are aquatic, most of them are marine and rarely freshwater. They have two types of pores. Inhalent pores are known as Ostia and exhalant pores are known as Oscula. They also have flagellated collar cells in the body.