Why are real bath sponges so soft?
A) The silica is dissolved away and only the calcium carbonate remains.
B) The calcium carbonate is dissolved away and only the silica remains.
C) The choanocytes are dissolved away and only the amoebocytes remain.
D) Silica or calcium spicules are removed, leaving only the spongin fibers.
E) The spongin is removed, leaving only the spicules.
Correct Answer:
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Q2: Which of the following statements is/are true
Q3: Protostomes are distinguised from deuterostomes based on
A)
Q4: Nematocysts are characteristic of
A) sponges.
B) clams.
C) cnidarians.
D)
Q5: Filter feeders are
A) active predators.
B) sessile or
Q6: Which of the following is a characteristic
Q8: Which statement is true about invertebrate animals?
A)
Q9: The following statements refer specifically to sponges,
Q10: Which of the following correctly matches the
Q11: Sponges are generally protected from predators by
Q12: While exploring, you find an organism washed
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