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These movements are thought to be regulated by having unequal cell elongation in certain plant tissues, causing different tissues to bend. [2] 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 ...
Life forms: (1) Phanerophyte, (2; 3) Chamaephyte, (4) Hemicryptophyte, (5; 6) Geophyte, (7) Helophyte, (8; 9) Hydrophyte. Therophyte and epiphyte are not shown. The Raunkiær system is a system for categorizing plants using life-form categories, devised by Danish botanist Christen C. Raunkiær and later extended by various authors.
In linguistics, anaphora (/ ə ˈ n æ f ər ə /) is the use of an expression whose interpretation depends upon another expression in context (its antecedent).In a narrower sense, anaphora is the use of an expression that depends specifically upon an antecedent expression and thus is contrasted with cataphora, which is the use of an expression that depends upon a postcedent expression.
Associations between fungi and plant roots, wherein the fungus facilitates nutrient uptake (particularly nitrogen) by the plant in exchange for carbon in the form of sugars from the plant root. [2] There is a parallel example in marine environments of sponges on the roots of mangroves, with a relationship analogous to that of mycorrhizae and ...
Carpel number is usually 2, 3 or 5 (8 in Ostrowskia), and corresponds to the number of stigmatic lobes. The style is in various ways involved in the "presentation" of the pollen, as in several other families of the order Asterales. In Lobelioideae, pollen is, already in the bud stage, released into the tube formed by the anthers. During ...
Plants can tell the difference between the shade of an inanimate object (e.g. a rock) and the shade of another plant, as well as the presence of nearby plants that may compete with and shade it in the future. [2] In the shade of a plant, far red light is present in a higher irradiance than red light, as a result of the absorption of the red ...
An example of the first type of damage would be found in some recalcitrant nontropical hardwood seeds, specifically the acorns of recalcitrant oaks, which can be stored in a non-frozen state for up to two years provided that precautions are taken against drying.
The plants are hardy herbaceous perennials with narrow tufted radical leaves and an elongated stem bearing a handsome spike of white or yellow flowers. Asphodelus albus and A. fistulosus have white flowers and grow from 45 to 60 centimetres ( 1 + 1 ⁄ 2 –2 ft) high; A. ramosus is a larger plant, the large white flowers of which have a ...