Search results
Results from the WOW.Com Content Network
If necessary, an aqueous solution of alkaloid salts is again made alkaline and treated with an organic solvent. The process is repeated until the desired purity is achieved. In the acidic extraction, the raw plant material is processed by a weak acidic solution (e.g., acetic acid in water, ethanol, or methanol). A base is then added to convert ...
Plant–animal interaction. Plant-animal interactions are important pathways for the transfer of energy within ecosystems, where both advantageous and unfavorable interactions support ecosystem health. [ 1][ 2] Plant-animal interactions can take on important ecological functions and manifest in a variety of combinations of favorable and ...
At one time, the cryptogams were formally recognised as a group within the plant kingdom. In his system for classification of all known plants and animals, Carl Linnaeus (1707–1778) divided the plant kingdom into 24 classes, [1] one of which was the "Cryptogamia". This included all plants with concealed reproductive organs.
Pontederia crassipes (formerly Eichhornia crassipes ), commonly known as common water hyacinth, is an aquatic plant native to South America, naturalized throughout the world, and often invasive outside its native range. [ 1][ 2][ 3] It is the sole species of the subgenus Oshunae within the genus Pontederia. [ 4]
Humans are among the longest living land mammals. [ 97] Jeanne Calment, a French woman, lived to the age of 122 years, 164 days, making her the oldest fully documented human who has ever lived. She died on August 4, 1997. [ 98] Jiroemon Kimura (†116 years, 54 days), a Japanese man, died on 12 June 2013.
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite. This is in accordance with Justus von ...
Plant breeding. Plant breeding is the science of changing the traits of plants in order to produce desired characteristics. [ 1] It has been used to improve the quality of nutrition in products for humans and animals. [ 2] The goals of plant breeding are to produce crop varieties that boast unique and superior traits for a variety of applications.
Abscisic acid (ABA) is an isoprenoid plant hormone, which is synthesized in the plastidal 2- C -methyl-D-erythritol-4-phosphate (MEP) pathway; unlike the structurally related sesquiterpenes, which are formed from the mevalonic acid -derived precursor farnesyl diphosphate (FDP), the C 15 backbone of ABA is formed after cleavage of C 40 ...