What are pheromones? Discuss their role in insects. (UPSC 2021, 15 Marks, )

फेरोमोन क्या होते हैं? कीड़ों में उनकी भूमिका पर चर्चा करें। (What are pheromones? Discuss their role in insects.)

What are pheromones? Discuss their role in insects. (UPSC 2021, 15 Marks, ) EN ह function dochangelang(val) { if (val != "") { window.location = val; } }