MEDULLARY PHLOEM Meaning and
Definition
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Medullary phloem is a specialized tissue found in certain types of plants that is responsible for transporting nutrients, sugars, and other organic compounds throughout the plant. It is one of the two types of phloem tissue, the other being cortical phloem, and is located towards the inner region of the stem, roots, or other plant structures.
The medullary phloem consists of numerous types of cells that work together to facilitate the movement of nutrients. These cells include sieve cells, companion cells, parenchyma cells, and fibers. Sieve cells are elongated cells with perforated end walls known as sieve plates, which allow for the movement of sap. Companion cells are closely associated with sieve cells and provide metabolic support and energy for the proper functioning of sieve cells. Parenchyma cells function in food storage and the transport of materials, while fibers provide support and reinforcement to the tissue.
The primary function of medullary phloem is to transport sugars, such as glucose and sucrose, from the photosynthetic tissues where they are produced (such as leaves) to other parts of the plant where they are needed, such as roots or developing fruits. Additionally, medullary phloem also transports various other nutrients, hormones, and signaling molecules critical for plant growth and development.
Overall, medullary phloem plays a crucial role in the distribution of essential compounds within plants, ensuring their proper growth, metabolism, and survival.
Common Misspellings for MEDULLARY PHLOEM
- medulliary phloem
- medulla phloem
- medullar phlem
- medullar phloem
- medullary phlem
- medulliary phlem
Etymology of MEDULLARY PHLOEM
The word "medullary phloem" is derived from two different terms:
1. Medullary: The term medullary comes from the Latin word "medulla" which means "marrow" or "pith". In the context of plants, it refers to the central part of a structure or organ.
2. Phloem: Phloem is a term that originates from the Greek word "phloios" meaning "bark". It is a tissue in vascular plants responsible for transporting sugars, organic molecules, and other substances produced during photosynthesis from leaves to other parts of the plant, such as roots, stems, and fruits.
When combined, "medullary phloem" refers to the specific location of the phloem tissue within the central part or innermost region of a plant's organ or structure.
