In the process some of the mass of the hydrogen atoms is converted into energy in the form of light. The same process occurs in thermonuclear (fusion) bombs. In the Sun the process occurs in a controled manner. In a bomb it happens all at once in a big chain-reaction explosion.
Phloem. Definition. noun. A tissue in a vascular plant that functions primarily in transporting organic food materials (e.g. sucrose) from the photosynthetic organ (leaf) to all the parts of the plant.
Basically, xylem tranports water and phloem transports organic substances. Xylem is a tissue found in vascular plants that transorts water and dissolved mineral nutrients. It consists of hollow vessels that are formed from cells joined end to end in flowering plants.ylem tissues transport water from the roots throughout the plant, while phloem transports food (suga â¦ rs) from photosysnthesis throughout the plant. Xylem: tubes that brings water and minerals from the roots into the leaf.