Final answer:
Fungal control with biocides is difficult due to fungi's resistance to biocides, their eukaryotic cell complexity, ability to quickly adapt, and the resilience of fungal spores. These factors contribute to the challenges in effectively eliminating fungal infections and contaminations.
Step-by-step explanation:
The difficulty in controlling fungi with biocides can be attributed to several factors. Firstly, fungi have indeed developed resistance to biocides, making it harder to eliminate them effectively. Secondly, biocides are generally less effective against fungi compared to bacteria because fungi are eukaryotic organisms, which means their cells have complex structures that can protect them from the effects of many biocides. Thirdly, fungi are known for their ability to quickly adapt to environmental stressors, including biocides. This adaptability allows them to survive in conditions where other organisms might not. Lastly, many biocides have limited effectiveness against fungal spores. These spores can be highly resistant to environmental stresses and can lie dormant until conditions are favorable for growth, making them a persistent problem.