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Tendril. A curling tendril. In botany, a tendril is a specialized stem, leaf or petiole with a threadlike shape used by climbing plants for support and attachment, as well as cellular invasion by parasitic plants such as Cuscuta. [1] There are many plants that have tendrils; including sweet peas, passionflower, grapes and the Chilean glory ...
Tendril perversion is a geometric phenomenon sometimes observed in helical structures in which the direction of the helix transitions between left-handed and right-handed. [1] [2] Such a reversal of chirality is commonly seen in helical plant tendrils and telephone handset cords. [3] The phenomenon was known to Charles Darwin, [4] who wrote in ...
Thigmotropism. Redvine (Brunnichia ovata) tendrils coil upon contact. In plant biology, thigmotropism is a directional growth movement which occurs as a mechanosensory response to a touch stimulus. Thigmotropism is typically found in twining plants and tendrils, however plant biologists have also found thigmotropic responses in flowering plants ...
Smilax sprengelii Kunth. Smilax rotundifolia, also known as roundleaf greenbrier[2] or common greenbrier, is a woody vine native to the southeastern and eastern United States and eastern Canada. [1][3][4] It is a common and conspicuous part of the natural forest ecosystems in much of its native range. The leaves are glossy green, petioled ...
Antigonon leptopus is a fast-growing climbing vine that holds on via tendrils, and is able to reach over 7 metres in length. It has cordate (heart-shaped), sometimes triangular leaves 25 to 75 mm long. The flowers are borne in panicles, clustered along the rachis. Producing pink or white flowers from spring to autumn, it forms underground ...
Docking (the insertion of one man's penis into another man's foreskin) is also practiced. Manual sex is another non-penetrative sex act that can occur between men. This includes handjobs, which is the use of one's hands to stimulate someone else's penis or scrotum, and anal fingering, which is the use of one's fingers to stimulate someone's anus.
Plant memory. In plant biology, plant memory describes the ability of a plant to retain information from experienced stimuli and respond at a later time. For example, some plants have been observed to raise their leaves synchronously with the rising of the sun. Other plants produce new leaves in the spring after overwintering.
NoPhone is a company that manufactures a plastic object that resembles a smartphone. It was created as part of the backlash against smartphone addiction. [1][2][3] The company manufactures four different types, the NoPhone, NoPhone Zero, NoPhone Air, and NoPhone Selfie. [4][5] The solid bricks of plastic are marketed as being "completely toilet ...
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