Cross-species pollination could spread herbicide resistance genes, creating:

• A. Cross-species pollination spreading herbicide resistance genes
• B. Increases soil fertility
• C. Reduces pollination
• D. No ecological impact

Answer: (A)

Gene flow via pollen between species can move herbicide resistance alleles into related species. If resistance genes pass from one plant to another, the recipient population may become herbicide-resistant, complicating control strategies and altering plant communities. This outcome is a direct consequence of cross-species pollen transfer, whereas options about soil fertility, pollination reduction, or no impact do not reflect the genetic and ecological implications of spreading resistance genes.