AP BIOLOGY

Detailed explanation-1: -Xylem transports water, minerals, and nutrients from the soil to all the plant parts.

Detailed explanation-2: -Plants have two transport systems-xylem and phloem . Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.

Detailed explanation-3: -In plants, water and minerals are transported through xylem cells from soil to the leaves. The xylem cells of roots, stems and leaves are interconnected to form a conducting channel that reaches all parts of the plant body. The root cells take ions from the soil.

Detailed explanation-4: -Plants require two types of nutrients-macronutrients and micronutrients. Macronutrients include nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. The micronutrients include boron, chlorine, copper, iron, manganese, molybdenum, and zinc.

Detailed explanation-5: -Substances transported are glucose, glycerol, minerals, vitamins, fatty acids, amino acids, and hormones. Water enters the xylem to reach the leaves and is further diffused out through the process of transpiration. The movement of water is unidirectional.