I want to apply to an internship related to growing plants in closed containers that look more like art objects than indoor plants. The job listing says to send a 'motivation letter and portfolio to' an email address. The main responsibilities are related to testing prototypes, recording data and identifying pathogens, not design and photography, so this portfolio request baffles me as I don't remember ever hearing of portfolios for plant care/plant testing/horticulture jobs.
I don't really understand if they're asking for a collection of pictures of plants I've cared for, or a file including photos, resume, and achievements, or something else all together. I haven't had any contact with the company yet. Is it okay to ask the company to clarify what they are looking for? How do I ask in such a way that doesn't make me look bad?