A researcher extracts sap from an infected tobacco plant and passes it through a porcelain filter. Which organism would still be present in the filtrate?
Q1. A researcher extracts sap from an infected tobacco plant and passes it through a porcelain filter. Which organism would still be present in the filtrate?
Answer: Tobacco Mosaic Virus
Explanation: Viruses pass through filters that retain bacteria. Tobacco Mosaic Virus is the correct answer; bacteria like E. coli are trapped by such filters.