CAN A source also be a sink?

CAN A source also be a sink?

Source activity refers to photoassimilate production, for example by photosynthesizing leaves. Sink activity is photoassimilate use and storage. Belowground organs of plants (e.g. roots and rhizomes) are sinks during plant growth since they cannot perform photosynthesis. Some organs are both a source and sink.

Is is possible for structures to be both a source and a 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. …

What is source and sink of water?

Oceans and rivers are both the major source and sink of water. Clouds form from water evaporated to precipitate on land and sea also affecting the water cycle. Silica is the major constituent of the earths crust and thus weathering of the crust is the main source.

What is the sink of a river?

Sink: Sediment is deposited across natural river deltas and floodplains.

What is source-sink concept?

In crop plants, the physiological basis of dry matter production is dependent on the source-sink concept, where the source is the potential capacity for photosynthesis and the sink is the potential capacity to utilize the photosynthetic products. Sink size is the potential capacity for maximum production of crop.

Are fruit sources or sinks?

A fruit is a sink because it produces very little of all the sugars it requires and depends on a source for all the inorganic nutrients it contains. Vegetables, e.g., spinach leaves are a different matter. Only young leaves are sinks, when they import sugars as well as nutrients.

What is the difference between 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.

Is photosynthesis a source or a 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 the difference between a carbon source and sink?

A carbon sink is anything that absorbs more carbon from the atmosphere than it releases – for example, plants, the ocean and soil. In contrast, a carbon source is anything that releases more carbon into the atmosphere than it absorbs – for example, the burning of fossil fuels or volcanic eruptions.

Which is the largest basin in the world?

Amazon Basin
The Amazon Basin, in northern South America, is the largest in the world. The Amazon River and all of its tributaries drain an area more than 7 million square kilometers (about 3 million square miles).

What is Delta in geography?

Deltas are wetlands that form as rivers empty their water and sediment into another body of water. Deltas are wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river. Although very uncommon, deltas can also empty into land.

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 …

Can a heat sink be used as a heat source?

Air can be used as heat source by means of several types of heat pumps such as air-to-air, air-to-water, water-to-air or brine-to-water for which the heat sink is either air or heating water and/or domestic hot water.

Can you drink water out of a sink?

There are many who can remember the days of drinking straight from the garden hose and right out of the tap before bottled water was popular and when water filtration systems had yet to become mainstream in businesses and households. With the options available now, it’s common to wonder, can you drink sink water? The answer is yes and no.

Why are kitchen sinks good for water conservation?

They also use less energy and fewer chemicals than other forms of wastewater treatment. Kitchen sinks usually produce a plentiful supply of water that can be diverted from the sink drain inside the house.

Why does the water in a lake sink?

Water also sinks in water due to thermal gradients. When winter sets in over a sizable lake, the cold air lowers the temperature of the water near the surface. That chilled water then sinks while lower-density warmer water below it rises. This repeats itself until all of the lake water is near the freezing point.