Question

Systemic poisons are absorbed by the plant parts or roots and translocated through which system?

• A. Digestive system
• B. Tracheal system
• C. Vascular system
• D. Respiratory system

Answer 1

Answer:

C. Vascular system

• Fumigant: The pesticide or toxicant enters into the tracheal system (respiratory poison) through spiracles in vapour form.

• Eg: Aluminium phosphide

• Systemic poison - Pesticides applied on the plant parts or on soil are absorbed by the foliage (or) roots and translocated through vascular system. Such pesticides cause death of insect feeding on plant.

• Eg: Dimethoate