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May 28, 2023 · sink. 1. A drain to carry off filthy water; a jakes. 2. A shallow box or vessel of wood, stone, iron, or other material, connected with a drain, and used for receiving filthy water, etc, as in a kitchen. 3. A hole or low place in land or rock, where waters sink and are lost; called also sink hole. Sink hole. The opening to a sink drain.
Difference between Source and Sink in Plants. The photosynthetically active parts of a plant are referred to as the source. The areas of active growth and areas of storage are referred to as sinks. However, a source is not always a source, and a sink is not always a sink. For example, leaves that act as sources when the plant is fully grown are ...
- The source-sink theory is an ecological model that says that a variation in habitat is likely to bring a downfall or rise in the population graph.
- The source and sink relationships in plants determine the yield and nutritional quality of the crops produced.
- Fruits act as a sink in plants because they depend on the source for their supply of sugars.
Common sinks include roots, fruits, seeds, and young leaves. Sinks receive nutrients via phloem transport facilitated by pressure-flow mechanism. The sink strength depends on its ability to uptake and utilize the transported solutes. Sink-source relationships can change based on developmental stages and environmental conditions.
sink. A site within a plant or cell where a demand exists for particular substrates or catalysts. Thus the mitochondria are sinks for oxygen and respiratory substrates while the chloroplasts require carbon dioxide. At a higher level of organization fruits, roots, and shoot apices are sinks for photosynthates. See mass flow hypothesis. < Prev.
Quick Reference. 1 A place where a substance can be stored naturally, such as plants which are a sink for carbon dioxide (because they transform it by photosynthesis into organic matter, which either stays in the plant or is stored in the soil). Contrast source. See also carbon sink. 2 See sinkhole. From: sink in A Dictionary of Environment and ...
Other articles where sink is discussed: angiosperm: Process of phloem transport: …sugars from sieve tubes in sink regions—i.e., those in which sugars are removed or imported for growth and storage—lowers it. Thus a pressure gradient from the area of photosynthesis (source) to the region of growth or storage (sink) is established in sieve tubes that would allow solution flow. The ...
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Dec 24, 2022 · 16.4: Nutrient Cycles. 16.4A: Sources and Sinks of Essential Elements. Expand/collapse global location. 16.4A: Sources and Sinks of Essential Elements. 16.4: Nutrient Cycles. 16.4B: The Carbon Cycle. Biogeochemical cycles are pathways by which essential elements flow from the abiotic and biotic compartments of the Earth.
