The demosponges
A) constitute only a small number of species.
B) are mostly marine but include the freshwater sponges.
C) have the asconoid-type canal system.
D) are referred to as calcium or chalk sponges.
E) form the most beautiful glass spicule patterns.Members of the class Demospongia are the most common sponges.Most are large,leuconoid sponges.
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Q20: Which statement about adult sponges is false?
A)Their
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Q27: Which of the following statements about sponges
Q28: Which is NOT a trait of sponges?
A)They
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