HORTICULTURE

Detailed explanation-1: -An orange is a fruit of various citrus species in the family Rutaceae (see list of plants known as orange); it primarily refers to Citrus × sinensis, which is also called sweet orange, to distinguish it from the related Citrus × aurantium, referred to as bitter orange.

Detailed explanation-2: -Citrus is a genus of flowering trees and shrubs in the rue family, Rutaceae (/ruːˈteɪsiˌaɪ/). Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes.