AP BIOLOGY

Detailed explanation-1: -The primary functions of the stem are to support the leaves; to conduct water and minerals to the leaves, where they can be converted into usable products by photosynthesis; and to transport these products from the leaves to other parts of the plant, including the roots.

Detailed explanation-2: -Stem transports only water to different parts of the plant. Q. Phloem tissue helps in transfer of food to different parts of plant and Xylem tissue helps in transfer of water and minerals to different parts of the plant.

Detailed explanation-3: -Functions: Stem mainly helps in the upward movement of water and minerals that are absorbed by the roots and then transports them to the other parts of the plants such as leaves, flowers and fruits. Stem provides support as well as protection to the plant and is also involved in the vegetative propagation of plants.

Detailed explanation-4: -(i) It supports branches, leaves, flowers, and fruits. (ii) It transports water and minerals from the roots to the leaves and other parts of plants. (iii) It transports food from leaves to different parts of the plant. (iv) It holds the plant upright.

Detailed explanation-5: -Stem keeps the plant upright. Stem conducts water and nutrients from the roots to the leaves. Stem conducts food from the leaves to the other parts of the plant.