Mgbe ejiri ya mee ihe dị ka ihe ọkụkụ na-akpali ọrụ ugbo, 1-Naphthylacetic acid nwere njirimara na ọrụ physiological nke auxin auxin dị egwu. Ọ na-akwalite metabolism na photosynthesis nke ihe ọkụkụ, dị ka ịkwalite nkewa sel na mmụba, na-ebute usoro mgbọrọgwụ na-ejighị n'aka, ịmị mkpụrụ mkpụrụ osisi, igbochi idobe mkpụrụ osisi, na ịgbanwe oke nke ifuru nwoke na nwanyị, wdg. Na elu uche, o nwere nke igbochi uto. Akingmị mkpụrụ shuga osikapa na ọka wit na ọka NAA nwere ike ịba ụba mkpụrụ. O nwekwara ike igbochi nkwụsị nke mkpụrụ osisi na owu, kwalite mkpo osisi na ịgbanye okooko, mee ka mkpụrụ osisi topụta, ma mee ka ihe ọkụkụ tolite ma na-amị mkpụrụ. Na-egbochi ọdịda nke okooko osisi na mkpụrụ osisi ma na-akwalite nhazi nke mkpụrụ osisi na-enweghị mkpụrụ.

 Mgbe ejiri ya na-egbochi mkpụrụ osisi ịda, ntinye uche ekwesịghị ịdị oke elu, ma ọ bụghị ya, ọ ga-enwe mmetụta ọzọ, n'ihi na nnukwu ọnụọgụ nke 1-naphthylacetic acid nwere ike ịkwalite mmepụta nke ethylene na osisi;

Mgbe ejiri ya n'ịkwalite mgbọrọgwụ osisi, ọ ga-aka mma ijikọ na IAA ma ọ bụ ndị ọzọ na-akwalite mgbọrọgwụ, ma ọ bụrụ naanị jiri 1-naphthylacetic acid, mmetụta mgbọrọgwụ dị mma, mana uto mkpụrụ anaghị adị mma. Mgbe ị na-agba ahịhịa na mkpụrụ osisi, ọ ga-adị mma ka ị na-agba ya nke ọma na epupụta.