exine
exine The outer, decay-resistant coat of a pollen grain or spore. The exine is characteristic for different plant families and genera, and sometimes even for different species. Hence it forms the basis for the identification and quantitative analysis of the vegetation composition of peats and other suitable sedimentary deposits dating back many thousands of years. See also PALYNOLOGY and POLLEN ANALYSIS.
exine
exine The outer, decay-resistant coat of a pollen grain or spore, composed of sporopollenin, an inert polymer (possibly the toughest of all polymers of biological origin). The exine is characteristic for different plant families and genera, and sometimes even for different species. Hence it forms the basis for the identification and quantitative analysis of the vegetation composition of peats and other suitable sedimentary deposits dating back many thousands of years. See also palynology.
exine
exine Outer, decay-resistant coat of a pollen grain or spore, composed of sporopollenin, an inert polymer. The exine is characteristic for different plant families and genera, and sometimes even for different species. Hence it forms the basis for the identification and quantitative analysis of the vegetation composition of peats and other suitable sedimentary deposits dating back many thousands of years. See also PALYNOLOGY.
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Pollen Analysis , Pollen analysis, or palynology , is the study of fossil pollen (and to a lesser degree, plant spores) preserved in lake sediments, bog peat, or other… inverse analysis , inverse analysis The grouping of attributes based on an analysis of the individuals that possess or lack those attributes; e.g. in plant ecology the… Microfossils , Palynology is the study of fossil pollen (and sometimes plant spores) extracted from lake sediment, peat bog, or other matrices. The most common goal… Invasive Species , Plants that grow aggressively and outcompete other species are called invasive species. Invasive plants are usually those that were introduced, eithe… Allopatry , allopatry The occurrence of species or other taxa in different geographical regions. Subspecies are allopatric by definition. Compare SYMPATRY.
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The word flora has two meanings in biology. One definition means all of the vegetation of a region, such as the flora of North America; the oth…
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exine