Search results
Results from the WOW.Com Content Network
Biological thermodynamics (Thermodynamics of biological systems) is a science that explains the nature and general laws of thermodynamic processes occurring in living organisms as nonequilibrium thermodynamic systems that convert the energy of the Sun and food into other types of energy. The nonequilibrium thermodynamic state of living ...
The precise physiological mechanism enabling plant thermotropism is not yet understood. [4] It has been noted that one of the earliest physiological responses by plants to cooling is an influx of calcium ions from the cell walls into the cytosol, which increases calcium ion concentration in the intracellular space.
Plants, along with other primary producers, produce the energy that other living beings consume, and the oxygen that they breathe. [3] It is thought that the first organisms on Earth were primary producers located on the ocean floor. [3] Autotrophs are fundamental to the food chains of all ecosystems in the world. They take energy from the ...
In other processes, like in the temperature regulation of flower openings, movement has instead been shown to be a result of irreversible cell growth, a growth type not typically associated with plant movement. [2] Furthermore, thermonasty has been shown to be independent of other environmental signals, such as light and gravity. [3]
Because herbivores prefer nutritionally dense plants and avoid plants or plant parts with defense structures, a greater amount of plant matter is left unconsumed within the ecosystem. [27] Herbivore avoidance of low-quality plant matter may be why terrestrial systems exhibit weaker top-down control on the flow of energy. [22]
The physical condition of a thermodynamic system at a given time is described by its state, which can be specified by the values of a set of thermodynamic state variables. A thermodynamic system is in thermodynamic equilibrium when there are no macroscopically apparent flows of matter or energy within it or between it and other systems. [1]
This is because the smaller plants do not have enough volume to create a considerable amount of heat. Large plants, on the other hand, have a lot of mass to create and retain heat. [5] Thermogenic plants are also protogynous, meaning that the female part of the plant matures before the male part of the same plant. This reduces inbreeding ...
For example, the light reaction creates ATP and NADPH energy molecules, which C 3 plants can use for carbon fixation or photorespiration. [43] Electrons may also flow to other electron sinks. [ 44 ] [ 45 ] [ 46 ] For this reason, it is not uncommon for authors to differentiate between work done under non-photorespiratory conditions and under ...