Water is one of the most essential elements for plant life, as it is involved in many vital processes such as photosynthesis, growth, and the transport of nutrients. Plants absorb water and mineral salts from the soil and transport them to different parts through specialized systems within the plant, ensuring the continuity of vital processes. Absorption of Water and Minerals from the Soil Water and mineral salts are primarily absorbed by the roots, especially through root hairs, which increase the surface area in contact with the soil. Water enters root cells mainly by osmosis due to differences in solute concentration between the soil and the root cells, while mineral salts are absorbed through active transport or diffusion. Transport of Water and Minerals within the Plant After absorption, water and minerals are transported through specialized plant tissues known as vascular tissues, particularly the xylem, which carries water and minerals from the roots to the stem and then to the leaves. Factors Aiding the Movement of Water in Plants Several factors contribute to the movement of water داخل النبات, including: Root Pressure: It results from the absorption of water and minerals by the roots, pushing water upward through the stem. Transpiration Pull: When water evaporates from leaves through stomata, a negative pressure is created that pulls water from the roots to the leaves. Cohesion and Adhesion Properties: Water molecules stick together (cohesion) and adhere to the walls of xylem vessels (adhesion), helping maintain a continuous water column داخل النبات. Importance of Water and Mineral Transport in Plants Supplying cells with water necessary for vital processes. Transporting mineral salts required for growth. Contributing to photosynthesis. Maintaining plant rigidity and preventing wilting. Conclusion The transport of water and minerals is a fundamental process in plant life, ensuring that essential elements reach all parts of the plant. This process occurs through the interaction of several factors such as root pressure, transpiration, and the physical properties of water, enabling the plant to grow and function efficiently. Al-Mustaqbal University is the First University in Iraq
  الهدف الرابع : التعليم الجيد