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A classic circular form spider's web Infographic illustrating the process of constructing an orb web. A spider web, spiderweb, spider's web, or cobweb (from the archaic word coppe, meaning 'spider') [1] is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey.
COBWEB is an incremental system for hierarchical conceptual clustering. COBWEB was invented by Professor Douglas H. Fisher, currently at Vanderbilt University. [1] [2] COBWEB incrementally organizes observations into a classification tree. Each node in a classification tree represents a class (concept) and is labeled by a probabilistic concept ...
As the typical lateral branch of a tree and its trunk expand in diameter at different rates, the base of the smaller branch becomes occluded in the larger trunk of the tree which is producing a larger increment of growth, and this occluded part of the branch forms a knot that provides substantial additional mechanical support to the attachment ...
Pseudobombax elipticum is a tree that can reach 18 m (60 ft) in height and 1.3 m (4 ft) d.b.h. Its branches are close to the base of the stem. It is a deciduous tree with succulent stems. Each of the flowers can produce hundreds of tiny black seeds (.1mm) that germinate within approximately 30 days.
Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. [1] This diverse, globally distributed family includes over 3,000 species in 124 genera , [ 2 ] and is the most common arthropod found in human dwellings throughout ...
Some are trees that have a weeping or pendulate growth habit; the branches still respond to gravity, but with a positive response, rather than the normal negative response. Others are the lazy (i.e. ageotropic or agravitropic) varieties of corn ( Zea mays ) and varieties of rice, barley and tomatoes, whose shoots grow along the ground.
Epidermodysplasia verruciformis is different in that it leaves victims unable to fight off certain types of HPV. "Tree man" syndrome is so rare that only 200 cases have been reported globally.
The three main early branches of the tree of life have been intensively studied by microbiologists because the first organisms were microorganisms. Microbiologists (led by Carl Woese) have introduced the term domain for the three main branches of this tree, where domain is a phylogenetic term similar in meaning to biological kingdom.