‘Source’ is the part of a plant where substances are produced (e.g. leaves for sucrose, amino acids) or enter the plant. ‘ Sink’ refers to the part of the plant where the substrate can be stored (e.g. roots or stem for starch).
What is a sink in biology?
The points of sugar delivery, such as roots, young shoots, and developing seeds , are called sinks. Seeds, tubers, and bulbs can be either a source or a sink, depending on the plant’s stage of development and the season. The products from the source are usually translocated to the nearest sink through the phloem.
What is meant by source and sink?
Sink and Source are terms used to define the flow of direct current in an electric circuit . A sinking input or output circuit provides a path to ground for the electric load. A sourcing input or output provides the voltage source for the electric load.
What is source and sink in science?
Carbon is constantly moving between these different stores, that act as either “sinks” or “sources.” A sink absorbs more carbon than it gives off , while a source emits more than it absorbs. The amount of carbon in the atmosphere at any one time depends on the balance that exists between the sinks and sources.
What is difference between source and sink?
Summary – Source vs Sink in Plants
Source refers to the site where plants produce their food using photosynthesis. In contrast, sink refers to the site where the plant stores the produced food . Therefore, this is the key difference between source and sink in plants.
Is a flower a source or a sink?
Sinks include areas of active growth (apical and lateral meristems, developing leaves, flowers, seeds, and fruits) or areas of sugar storage (roots, tubers, and bulbs). Storage locations can be either a source or a sink, depending on the plant’s stage of development and the season.
Why is it called a sink?
What we call sinks are in fact ‘basins’ from which the water ‘sinks’. The term sink likely comes from the old English term ‘sincan’ – to become submerged, go under, or subside . Originally it referred to the place to where the contents of your basin would sink.
What is difference between current source and current sink?
Source current is the ability of the digital output/input port to supply current. Sink current is the ability of the port to receive current .
What is source and sink relationship?
Source-sink relationships reflect the interplay between the main factors influencing source current (the rate of rise of the upstroke and amplitude of the action potential) and those that influence the current requirements of the sink (the membrane resistance, the difference between the resting and threshold potentials ...
What is the difference between a source and a sink ecology?
One patch, the source, is a high quality habitat that on average allows the population to increase. The second patch, the sink, is very low quality habitat that, on its own, would not be able to support a population.
What is an example of a source?
The definition of source is where someone or something came from. An example of a source is solar energy coming from the sun . An example of a source is the person who inspires you. An example of a source is the person who gives a juicy story to a magazine reporter.
Which act is both source and sink?
Roots and foliage are complex structures that function as both sources and sinks. ... For example, root cells need the energy provided by photosynthesis to take up water and nutrients, while leaves need water and nutrients (taken up by the roots) to perform photosynthesis and generate glucose.
Is photosynthesis a source or sink?
Taken together these data suggest that photosynthesis responds to and is controlled by whole plant source –sink balance, controlled by whole plant nutrient balance, principally by the carbon to nitrogen status.
What is PLC sink?
in plc sink means plc accepted voltage from sensor or input side while source means plc cpu output voltage.
What is a sinking driver?
sink driver, (current-)
A unipolar output whose primary connection within the integrated circuit is through an active device to the least positive (most negative) supply voltage (typically the circuit common).
What is source and sink analysis?
Source-to-sink analysis is a novel method in sedimentary geology that includes investigating the entire sedimentary system from its ultimate upstream source in the continental realm to the ultimate sediment sink , most commonly on deep basin plains (Fig. 1; Sømme et al.
