Which type of organism uses transport systems?

Multicellular organisms, such as animals and plants, use transport systems. Here's a step-by-step explanation:

1. In multicellular organisms, cells are specialized to perform different functions. This means that not all cells are in direct contact with the external environment.

2. Therefore, these organisms need a system to transport nutrients, gases, and waste products to and from different parts of their bodies. This is where transport systems come in.

3. In animals, the circulatory system is the main transport system. It consists of the heart, blood vessels, and blood. The heart pumps the blood, which carries oxygen and nutrients to the cells, and removes carbon dioxide and other waste products.

4. In plants, the xylem and phloem make up the transport system. The xylem transports water and minerals from the roots to the rest of the plant, while the phloem transports sugars and other nutrients from the leaves to the rest of the plant.

5. In conclusion, multicellular organisms like animals and plants use transport systems to move nutrients, gases, and wastes around their bodies.