The tough outer layer is highly resistant to disintegration and able to withstand strong acids, alkalies, and even intense heat. Nevertheless, with few exceptions, pollen is viable for only several days or weeks.
बाहेरच्या जाड अधिलेपाचे विघटन करणे अतिशय कठीण असते शिवाय ते आम्ले, अल्कली आणि उच्च तापमानही सहन करू शकते.