Definitions for sieve tube
sieve tube

Princeton's WordNetRate this definition:0.0 / 0 votes

1. sieve tubenoun

   tube formed by cells joined end-to-end through which nutrients flow in flowering plants and brown algae

WikipediaRate this definition:0.0 / 0 votes

1. sieve tube

   Sieve elements are specialized cells that are important for the function of phloem, which is a highly organized tissue that transports organic compounds made during photosynthesis. Sieve elements are the major conducting cells in phloem. Conducting cells aid in transport of molecules especially for long-distance signaling. In plant anatomy, there are two main types of sieve elements. Companion cells and sieve cells originate from meristems, which are tissues that actively divide throughout a plant's lifetime. They are similar to the development of xylem, a water conducting tissue in plants whose main function is also transportation in the plant vascular system. Sieve elements' major function includes transporting sugars over long distance through plants by acting as a channel. Sieve elements elongate cells containing sieve areas on their walls. Pores on sieve areas allow for cytoplasmic connections to neighboring cells, which allows for the movement of photosynthetic material and other organic molecules necessary for tissue function. Structurally, they are elongated and parallel to the organ or tissue that they are located in. Sieve elements typically lack a nucleus and contain none to a very small number of ribosomes. The two types of sieve elements, sieve tube members and sieve cells, have different structures. Sieve tube members are shorter and wider with greater area for nutrient transport while sieve cells tend to be longer and narrower with smaller area for nutrient transport. Although the function of both of these kinds of sieve elements is the same, sieve cells are found in gymnosperms, non-flowering vascular plants, while sieve tube members are found in angiosperms, flowering vascular plants.

ChatGPTRate this definition:0.0 / 0 votes

1. sieve tube

   A sieve tube is a series of sieve tube elements or cells found in the phloem tissue of flowering plants that are involved in the transportation of sugars and other nutrients. These tubes are connected end-to-end, and their primary function is to ensure the movement of food materials from leaves (source) to other parts of the plant (sink). They are characterized by the absence of nuclei and the presence of sieve plates, which are porous structures allowing the flow of nutrients.

Matched Categories

1. • Vascular Tissue

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Numerology

1. Chaldean Numerology

   The numerical value of sieve tube in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of sieve tube in Pythagorean Numerology is: 9

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=sieve tube
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Sieve_Tube
3. ^ ChatGPT
   https://chat.openai.com