Answer: Multicellular, eukaryote, Autotroph
Step-by-step explanation:
Flowers are plants and are visible without a microscope as well as being made of more than one cell, hence being multicellular. Plant and animal cells alike have nuclei, making them eukaryote. And finally, plants are autotrophs because they produce their own nutrients (aka in this case photosynthesis) and are the producers of the food chain.
I hope this helped!