AP BIOLOGY

Detailed explanation-1: -After traveling from the roots to stems through the xylem, water enters leaves via petiole (i.e., the leaf stalk) xylem that branches off from that in the stem.

Detailed explanation-2: -Stems carry water and nutrients taken up by the roots to the leaves. Then the food produced by the leaves moves to other parts of the plant. The cells that do this work are called the xylem cells. They move water.

Detailed explanation-3: -The tube-like structure called xylem is present in the stem that carries water to all the parts of the plant.

Detailed explanation-4: -The water-carrying tubes are called xylem. They transport water and dissolved substances from the roots to all parts of a plant. The food-carrying tubes are called phloem. They transport the food made by the leaves of the plant during photosynthesis to all parts of the plant.

Detailed explanation-5: -xylem tracheids. The xylem tracheary elements consist of cells known as tracheids and vessel members, both of which are typically narrow, hollow, and elongated. Tracheids are less specialized than the vessel members and are the only type of water-conducting cells in most gymnosperms and seedless vascular plants.