DENDROLOGY

Detailed explanation-1: -Vascular plants are also known as tube plants (tracheophytes). The presence of vascular tissues such as xylem (tube-like) and phloem ( tubular cells) plays a role in distributing food and water to the plant cells. Other ordinary characteristics include stems, leaves, and roots that hold the plant and provide support.

Detailed explanation-2: -The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.

Detailed explanation-3: -To extend the foot the echinoderm forces water from the bulb into the feet which creates pressure. A synchronized coordination of all the tube feet allows the echinoderm to move-almost as if it were gliding. Sea stars and urchins walk on their numerous tube feet using more than friction to move about.