Which Statement Does Not Apply to Diatoms

Multiple Choice

Which statement does not apply to diatoms?

A) The cell walls are often impregnated with silica.
B) During mitosis,the top and bottom of the cell become the tops of the two new cells.
C) Protein is the main photosynthetic storage product.
D) Zygotes are formed by gametes that lack cell walls.
E) They can show bilateral or radial symmetry.