What is the primary function of phloem in plants?

The primary function of phloem in plants is to transport sugar and organic substances. Phloem is a type of vascular tissue that plays a crucial role in the process of photosynthesis, where plants produce glucose (a type of sugar) in their leaves. This sugar is then moved through the phloem to various parts of the plant, including roots, stems, and fruits, to provide energy and support growth. The ability of phloem to distribute these essential nutrients is vital for the plant's overall health and development.

Other options, while related to plant functions, do not accurately describe the role of phloem. For instance, the movement of water and minerals from the roots is primarily handled by xylem, another type of vascular tissue. Similarly, support for the stem is primarily provided by structural tissues, and the generation of new leaves involves growth processes rather than a direct transport function of phloem. This understanding highlights the specific and essential role of phloem in the plant's nutrient transport system.