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.
Phloem and xylem are the two main types of vascular tissue found in plants. Xylem is the tissue that mainly carries water, and a few minerals, in the system.Phloem is the tis â¦ sue that carries photosynthetic materials through the plant.ne kind of vascular tissue is called the xylem and is responsible for the upward transport of nutrients and water. Another is phloem which is responsible for the downward tra â¦ nsport of photosynthates, plant hormones and other control substances. + 15 others found this useful. Tina Hunt.