A biologist whose interest lies primarily in the study of plants or animals can be called a naturalist, although these days it's more likely she'll be called a natural historian, a botanist, or a zoologist.
ER membranes flow to Golgi through ERGICs and get fragmented into small vesicles. When the cell divides, those vesicles within the daughter cells reassemble Golgi and ER to resume membrane traffic
Prophase is the right answer