Question

Introduction of exotic weeds can be prevented by (1)Catalogueing (2)Seed certification (3)Fumigation (4)Quarantine

Answer 1

Introduction of exotic weeds can be prevented by:

(1)Catalogueing

(2)Seed certification✔✔⚡

(3)Fumigation

(4)Quarantine

Answer 2

Answer:

Seed certification

This helps in introductions of exotic weeds prevention