Grammar on sentence listing in roman numerals

I cannot find help anywhere on the proper formatting for a sentence such as this:

Here, we addressed the following questions: i) what impacts do grazing and watering exert on plant reproductive successes? ii) how does grazing and watering affect timing and duration? iii) what are the divergent phenological responses to treatments among species?

I'm editing for a scientific research manuscript and want to know if punctuation and capitalization is correct. If you know, and if you can provide a link, I would greatly appreciate it.