Question

Anna is observing slides of unlabeled organisms. The organisms are unicellular, have delicate glass-like cell walls with sculpturing, and show all the cell organelles, including chloroplasts. Which organism is she observing? Euglenophytes Dinoflagellates Diatoms

Answer 1

Based on the characteristics that she's observing, the answer would be : Diatom
This kind of organism usually are producers within the food hierarchy , the most common type is phytoplankton.

Hope this helps

Answer 2

If Anna is observing slides of unlabeled organisms, which are unicellular, have delicate glass-like cell walls with sculpturing, and show the cell organelles, including chloroplasts, the organism she is observing are diatoms.