Transport is the moving of materials, such as food, in an organisms body.
Protists use diffusion to transport materials. On their cell wall they have proteins that only let certain materials in and out of the cell. Different proteins let different materials in and out. Once the nutrients are in the cell, they are picked up by different cell parts.
Unlike other worms annelid worms have blood vessels that transport materials throughout their body. When nutrients or oxygen is brought into the body it is picked up by blood cells that move along blood vessels dropping the materials off in certain parts of the worms body. The heart of this worm is near the front, and has two main blood vessels; one at the top and at the bottom. The veins come off of the main blood vessels into the center of the worm.
Insects also use blood vessels to move the materials they need around the body. Insects hearts are around their lower back, and one main blood vessel along their back. The veins come out of the blood vessels and around organs and other parts of the body.
Amphibians have blood vessels that move nutrients and other materials around their body. An amphibians heart is in their chest, they have four main blood vessels that extend to their legs. Off of the vessels are veins that extend through their legs, and around organs.
Mammals have the same transport system as amphibians. the heart is in the chest of the animal with four main blood vessels coming off of it. The vessels lead to veins in the arms and legs that move the blood through them and back to the heart. The veins are also around the animals organs.
Non-vascular plants cannot transport materials internally. They have to obtain materials that are sitting outside of their cells. They usually live in damp places so that they can soak up water and nutrients that are sitting in them.
Gymnosperms use roots to soak up water and nutrients, as they are soaked up they move through the plants stem. In the stem their is vascular tissue; food is transported through the phloem, water and minerals move through the xylem.
Angiosperms transport materials in the same way as gymnosperms, they use their vascular tissue. The roots in the ground pick up water and nutrients and pass them up the stem. In the stem food goes through the phloem, and water and minerals go through the xylem.