### Clue: Eg fungus-scavenger initially multiplied by 20 (7)
### Answer: CULTURE 
 ### Explanation: Definition: Eg fungus
  "Vulture"(large scavenger bird) whose first letter(initially) V(Roman numeral for 5)  is **replaced by** C(Roman numeral for 100 which is 5 multiplied by 20).
Answer: Fungus may be,eg a product of cultivation for scientific and medicinal purposes.  Note the nice touch of adding the hyphen to correspond to "culture-vulture".