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Dec 28, 2023 · Reply. Unitary organisms are organisms that have a single body and form which has no division into specialized parts or organs. Examples of unitary organisms include amoeba and some single celled protozoa. Modular organisms are organisms that are made up of identical, individual parts.
- Essential Resources
In the example above, the equation would become: y = k - x....
- Autochthonous and Allochthonous Production
Allochthonous inputs refer to any materials or energy...
- Essential Resources
- Water
- Nutrients
- Photosynthetic Products
The source of water is mainly the environment, i.e., the soil for rooted plants. The distribution of water within plants follows gradients of water potential from high water potential (source) to low water potential (sink). Sinks can be cells and tissues with high solute concentrations and hence low water potentials. The major sink for water is the...
Whole-plant physiology boomed in the 1970s with studies of mineral nutrition (Pitman 1975; Sutcliffe 1976a, b; see Lüttge 2013). The important facts were that nitrogen and sulfur are available in the root medium in the oxidized forms of NO3− and SO42−. These anions are taken up by the roots, but N and S are required in the metabolism of plants in r...
While nitrate and sulfate nutrition in the whole plant effectively is powered by source-sink relations of reduction potential (section “Nutrients”), the origin of source-sink concepts actually goes back to attempts of understanding long-distance phloem transport of photosynthetic products particularly sucrose, the major transport substance in the p...
- Ulrich Lüttge
- luettge@bio.tu-darmstadt.de
- 2019
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Modular construction by continual organogenesis and reiterated production of homologous structures is a quintessential plant feature which has motivated the consideration of plant individuals as ...
The United Kingdom operates as a unitary government, with the UK Parliament serving as the governing body. It consists of England and three countries with devolved governments: Scotland, Wales, and Northern Ireland. These devolved governments have varying levels of legislative powers, with the Scottish Parliament having additional authority in ...
The theory of these units is applied to considerations of conventional ways of organizing discussion of life principles, such as genetics, chemical synthesis, and the requirements of ‘exact theoretical biology’. Keywords: chemoton theory, origin of life, life principles, units of life, living systems. Subject. Biochemistry Evolutionary Biology.
Sep 26, 2023 · A biological system refers to a network of entities that work as a unit, functioning together as a unified whole. It refers to the hierarchical organization of life, encompassing ecosystems, organs, tissues, and cells. These biological components of a highly organized whole interact to maintain life processes.
Nov 21, 2023 · A unitary system of government is a political structure in which one level of government retains the bulk of political power. Governments divide into two main categories: unitary and federal ...
