Respuesta :

MissPhiladelphia
In plants, there is a conducting tissue that is located in the veins. Inside, there are xylem cells that conduct water and minerals upward from roots to leaves and phloem that conducts food. Plants have only water solutions flowing through the tubing. Animals can have one of two kinds of circulatory systems: open or closed. In animals, each blood vessel in the network is responsible for transporting nutrients and oxygen to cells and for removing wastes and carbon dioxide from cells. 
mayajoosub

Plants use tubes with stems and trunks that carry water and nutrients to different parts of the plants. In most animals, the circulatory system has three main components. Blood vessels form a system of channels or tubes through which the fluid blood travels, carrying materials the body needs to function.The heart is the main organ of the circulatory system. It is a pump that moves the blood through vessels. Humans have only one heart, but some animals have more than one heart. Hearts and vessels often contain valves to control the direction of the blood’s flow. They allow blood to flow in a particular direction and prevent it from flowing in the opposite direction.

Otras preguntas