HORTICULTURE

Detailed explanation-1: -Organic molecules such as sucrose and amino acids move from a source to a sink via phloem tubes in plants. The phloem is composed of living tissue called sieve tube members (lack a nucleus) that are joined end to end to form a tube that conducts food materials throughout the plant.

Detailed explanation-2: -Nitrogen (N) and carbon (C) are two of the most important nutrients for plant growth, and in the majority of plant species, they are transported in the phloem to sink organs in the form of amino acids and sucrose, respectively.

Detailed explanation-3: -Plants have vascular tissues to transport water, nutrients and minerals. Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose(sugar) and amino acids between the leaves and other parts of the plants.

Detailed explanation-4: -Phloem (/ˈfloʊ. əm/, FLOH-əm) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to the rest of the plant. This transport process is called translocation.