Question

The most effective, cheapest and convenient method to protect plants from pathogens is ___________.

• A. producing resistant varieties
• B. physical method
• C. biological herbicides
• D. chemical pesticides

Hint:

{Host plant resistance is the best defence against pathogens}.

Answer 1

The Correct Option is A

Step 1: Understanding plant protection methods.
Plants can be protected from pathogens using chemical, biological, physical, or genetic approaches.
Step 2: Evaluating effectiveness and cost.
Producing resistant varieties provides long-term protection without recurring costs or environmental damage.
Step 3: Conclusion.
Hence, developing resistant plant varieties is the most effective and economical method.