- Published on
Botanical Terms - acaulescent
used on plants with no stem at all, a very short stem, or a stem that is buried.
used on plants with no stem at all, a very short stem, or a stem that is buried.
- Published on
Botanical Terms - accessory pigments
In *photosynthesis, pigments that can absorb light energy and pass the electrons they emit to *primary pigments
In *photosynthesis, pigments that can absorb light energy and pass the electrons they emit to *primary pigments
- Published on
Botanical Terms - accidental species
One of the five fidelity classes used to describe and categorize plant communities by the *Braun–Blanquet school of phytosociology. Rare species that accidentally enter a community as relics from a former community or as chance invaders from another community are known as accidentals.
One of the five fidelity classes used to describe and categorize plant communities by the *Braun–Blanquet school of phytosociology. Rare species that accidentally enter a community as relics from a former community or as chance invaders from another community are known as accidentals.
- Published on
Botanical Terms - acclimatization (acclimation, hardening)
The changes involving the synthesis of *proteins, *membranes, and *metabolites that occur in a plant in response to chilling or freezing temperatures, which protect *tissues or confer tolerance to the cold. The phrase can also refer to a variety of physiological changes that take place in a plant in response to atypical environmental circumstances.
The changes involving the synthesis of *proteins, *membranes, and *metabolites that occur in a plant in response to chilling or freezing temperatures, which protect *tissues or confer tolerance to the cold. The phrase can also refer to a variety of physiological changes that take place in a plant in response to atypical environmental circumstances.
- Published on
Botanical Terms – Abiogenesis
The evolution of living things from non-living materials, as in the theory behind the genesis of life on Earth, or the idea of spontaneous generation, which was formerly thought to explain the emergence of life but is now out of date due to our current understanding of evolutionary processes.
The evolution of living things from non-living materials, as in the theory behind the genesis of life on Earth, or the idea of spontaneous generation, which was formerly thought to explain the emergence of life but is now out of date due to our current understanding of evolutionary processes.
- Published on
Botanical Terms – abiotic
Non-living; devoid of life
Non-living; devoid of life
- Published on
Botanical Terms -Abscisic acid (dormin, Abscisin II)
One of the five primary *plant hormones is a terpenoid.It is present throughout the plant body, but is especially abundant in the leaves, fruits, and seeds. It is primarily generated in the chloroplasts. In addition to its potent general growth-inhibiting effects, it also encourages leaf abscission, plant senescence, and the closure of stomata, which results in dormancy in seeds and buds. It is believed to function by preventing the synthesis of *protein and *nucleic acids, which is antagonistic to the effects of plant *growth hormones.
One of the five primary *plant hormones is a terpenoid.It is present throughout the plant body, but is especially abundant in the leaves, fruits, and seeds. It is primarily generated in the chloroplasts. In addition to its potent general growth-inhibiting effects, it also encourages leaf abscission, plant senescence, and the closure of stomata, which results in dormancy in seeds and buds. It is believed to function by preventing the synthesis of *protein and *nucleic acids, which is antagonistic to the effects of plant *growth hormones.
- Published on
Botanical Terms – Abscission
The rejection of plant parts, such as fall leaves. Cell adhesion is decreased at an abscission zone by *hydrolytic *enzymes. The ratio and gradients of *auxin and *ethene in nature regulate the process, which can be accelerated by *abscisic acid and inhibited by respiratory toxins. There might be more *hormones at play.
The rejection of plant parts, such as fall leaves. Cell adhesion is decreased at an abscission zone by *hydrolytic *enzymes. The ratio and gradients of *auxin and *ethene in nature regulate the process, which can be accelerated by *abscisic acid and inhibited by respiratory toxins. There might be more *hormones at play.
- Published on
Botanical Terms - Abies (fir)
(Pinaceae family) a genus of coniferous trees where the leaves are densely packed on the twigs, usually in two rows or so; they are solitary and needle-like, leaving a flat, round scar behind them when they fall, making the twig smooth. The woody axis endures even after the female cones, which are borne erect, break as they reach maturity. Due to their towering, profoundly pyramidal, *monopodial crowns, several fine ornamental species are now commonly grown; nonetheless, they are susceptible to air pollution and need a moist environment. There are 48 species, most of which are found on mountains in the northern hemisphere.
(Pinaceae family) a genus of coniferous trees where the leaves are densely packed on the twigs, usually in two rows or so; they are solitary and needle-like, leaving a flat, round scar behind them when they fall, making the twig smooth. The woody axis endures even after the female cones, which are borne erect, break as they reach maturity. Due to their towering, profoundly pyramidal, *monopodial crowns, several fine ornamental species are now commonly grown; nonetheless, they are susceptible to air pollution and need a moist environment. There are 48 species, most of which are found on mountains in the northern hemisphere.
- Published on
Botanical Terms - Aapa mires
*Fens are circumpolar fens that are located in northern Scandinavia and *boreal Canada. They are often referred to as "string bogs." These are *soligenous mires with ridges that follow the natural contours of the land and are roughly normal to the slope. The linear depressions between the ridges are filled with water.
*Fens are circumpolar fens that are located in northern Scandinavia and *boreal Canada. They are often referred to as "string bogs." These are *soligenous mires with ridges that follow the natural contours of the land and are roughly normal to the slope. The linear depressions between the ridges are filled with water.
