The Sidr tree (Ziziphus spina-christi) is an evergreen tree belonging to the Rhamnaceae family. It is widely distributed in arid and semi-arid regions and is characterized by its ability to tolerate high temperatures and water scarcity. The tree has a strong trunk and a dense, highly branched crown that provides shade, while some of its branches bear thorns that serve as a defense mechanism against herbivores. The Sidr tree has relatively small, glossy green leaves with structural adaptations that help reduce water loss through transpiration. It also possesses a strong root system that enables it to access water deep within the soil, allowing the plant to continue growing in drought-prone environments. The tree produces small flowers that are important to insects and pollinators. Following pollination, edible fruits known as jujubes are produced, which have considerable nutritional value. The fruits contain sugars, dietary fiber, and various nutritional components, while different parts of the plant have attracted attention in traditional medicine and phytochemical studies. Ecologically, the Sidr tree plays an important role by providing food and shelter for various organisms. Its root system also contributes to soil stabilization and helps reduce erosion. Its flowers provide a source of nectar for bees and other insects. The Sidr tree is particularly important in desert and semi-desert environments and therefore represents a suitable botanical model for studying plant adaptations to drought and heat, as well as the interactions between plants and dryland ecosystems. Al-Mustaqbal University – The First University in Iraq
  الهدف الرابع : التعليم الجيد