HORTICULTURE

Detailed explanation-1: -The glucose prepared in the leaves is converted into sugar. The sugar in the form of sucrose is moved into the companion cells and then into the living phloem sieve tube cells by active transport. This creates a hypertonic condition in the phloem. Water in xylem vessels adjacent to phloem moves through endosmosis.

Detailed explanation-2: -Fructose or glucose is converted into sucrose because sucrose contains more energy than a monosaccharide. It is more entry efficient both in transport and storage.

Detailed explanation-3: -In apoplast-loading species, sucrose reaches phloem parenchyma cells through plasmodesmata. Sucrose is loaded and accumulates in the phloem by passing through the apoplast between the PP and the CC.

Detailed explanation-4: -Sucrose is formed in the cytosol of photosynthesizing cells from fructose and glucose and is then transported to other parts of the plant.