HORTICULTURE

Detailed explanation-1: -Phloem and xylem are complex tissues that perform transportation of food and water in a plant. They are the vascular tissues of the plant and together form vascular bundles. They work together as a unit to bring about effective transportation of food, nutrients, minerals and water.

Detailed explanation-2: -Xylem and phloem are transporting systems that allow plants to move water, nutrients, and minerals. Xylem transports water and minerals from the roots to other parts of the plant, while phloem moves sucrose (sugar), amino acids, and other nutrients from the leaves to other parts of the plant.

Detailed explanation-3: -Phloem transports carbohydrates, produced by photosynthesis and hydrolysis of reserve compounds, to sink tissues for growth, respiration and storage.

Detailed explanation-4: -2. Phloem cell types. The phloem is a complex tissue and is formed typically by three cell types, the sieve elements, the parenchyma cells, and the sclerenchyma cells (Figure 2a–d). Sclerenchyma cells might sometimes be absent in primary and/or secondary phloem.

Detailed explanation-5: -Phloem tissue consists of conducting cells, generally called sieve elements, parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells and supportive cells, such as fibres and sclereids.