Ngwaahịa egosipụtara
Cell Division Plant Hormones gụnyere 6-BA, GA3, IAA, 2-IP wdg Cell Division Plant Hormones tumadi nwere mmetụta nke na-akwalite cell nkewa. Hormone osisi (nke a makwaara dị ka phytohormones) bụ kemịkalụ na-achịkwa uto osisi. Hormone osisi bụ mkpụrụ ndụ ihe mgbaàmà emepụtara n'ime osisi ahụ, ma na-eme na oke dị ala Hormones na-ahazi usoro cellular na sel ezubere iche na mpaghara na, kwaga ebe ndị ọzọ, n'akụkụ ndị ọzọ na-arụ ọrụ nke osisi ahụ. Hormone osisi na-ekpebikwa nguzobe nke okooko osisi, ị ga, akwụkwọ, ịwụfu akwụkwọ, na mmepe na rie mkpụrụ osisi. Osisi, n'adịghị ka anụmanụ, enweghị glands na-emepụta ma na-ezobe homonụ.