Which of the following characteristics would be seen in a dinoflagellate, but not in an apple tree? a. multicellular c. producer b. unicellular d. autotroph

The correct answer is B. unicellular.
Dinoflagellates are unicellular or multicellular, producers, and autotrophs, and apple trees are multicellular, producers, and autotrophs. All plants have numerous cells in them, so they can never be unicellular. The remaining characteristics they share with less complex organisms such as dinoflagellates.

1.989×10^30 kg is the weight of the sun.