Which group of protists secretes an external "shell" of silica (silicon dioxide)?
A) Diatoms
B) Paramecium
C) Red algae
D) Euglenids
E) Amoebozoans

Name: Which group of protists secretes an external "shell" of silica (silicon dioxide)? A) Diatoms B) Paramecium C) Red algae D) Euglenids E) Amoebozoans
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Diatoms are known for their unique cell walls made of silica. These walls form an external "shell" which protects the cell and gives it a distinctive shape.

Which Group of Protists Secretes an External "Shell" of Silica