4x Bacteria and fungi have a similar role in the ecosystem. They both grow directly on their nutrient source and are heterotrophic, meaning that they ingest food to obtain energy. Which of the explanations best describes the relationship between bacteria and fungi? A Since they are both common pathogens, bacteria and fungi compete to infect the same host at the same time. B Fungi and bacteria will always form a mutualistic relationship which benefits both species at the same time. C All bacteria are photosynthetic and all fungi are heterotrophic, so there is extremely little interaction between fungi and bacteria. D Since bacteria and fungi are both decomposers, fungi secrete antimicrobial antibiotics , which decreases the competition from the bacteria against the fungi.