AP BIOLOGY

Detailed explanation-1: -Xylem is a tissue that looks like a tube or a vessel but has no cross walls. This is responsible for moving water from the roots to the leaves. The suction force provided by transpiration pull is required for water movement.

Detailed explanation-2: -Xylem is one of the two types of vascular tissues in plants, phloem being the other. The function of xylem is to transport water and nutrients from the roots to all parts of the body.

Detailed explanation-3: -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-4: -Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water-conducting function of xylem is one of the major distinguishing features of vascular plants.

Detailed explanation-5: -Collenchyma tissue is made up of elongated living cells filled with water, and the pressure of the water against the cell walls creates a stiffness that gives celery its crunch. Collenchyma is found in plant stems, leaves and flowers.