DENDROLOGY

Detailed explanation-1: -Phloem is one of the two tissues that make up the plant’s long-distance transport system, the other being xylem. Phloem translocates water and products of photosynthesis from source tissues to the sink regions where they are utilized or stored.

Detailed explanation-2: -Phloem is one of the two types of vascular tissue in plants. It transports food formed in the leaves to the other parts of the plants.

Detailed explanation-3: -Lateral meristem is responsible for the increase in the girth of the stem. It is found beneath the bark (called cork cambium) and in vascular bundles of dicot roots and stems (called vascular cambium) as thin layers. It is composed of such initials which divide mainly in one plane and increases the girth of the stem.