Final answer:
The morphospecies concept has several potential disadvantages, including difficulties in applying it to organisms with small, hard to distinguish features, arbitrary species definitions, and lack of comparability between researchers.
Step-by-step explanation:
The disadvantage of the morphospecies concept is that all of the potential problems listed are associated with this species concept. First of all, it can be difficult to apply to organisms with small, difficult to distinguish features, making it challenging to accurately identify different species. Additionally, species definitions may become arbitrary if the concept is not applied carefully, leading to inconsistent classification. Lastly, species definitions applied by different researchers may not be comparable, making it difficult to compare and communicate scientific findings.