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In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
The word porcupine comes from the Latin porcus ' pig ' + spina ' spine, quill ', from Old Italian porcospino, ' thorn-pig '. [4] [5] A regional American name for the animal is quill-pig. [6] A baby porcupine is a porcupette. When born, a porcupette's quills are soft hair; they harden within a few days, forming the sharp quills of adults. [7]
In spanish is the same, coloquially we use "espina" and "espinoso" in a very broad sense, but botanists distinguish between espina (caulinar = thorn, foliar = spine) and aguijón (= prickle). It looks like botanists agree much more about the spanish terms than about the english ones. -- RoRo ( talk) 16:15, 25 September 2013 (UTC) [ reply ...
e. Standard anatomical terms of location are used to describe unambiguously the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on.
Spinous cells are found in the superficial layers of the skin. They are found in the stratum spinosum (prickly layer, spinosum layer), which lies above the stratum basale (basal layer) and below the stratum granulosum (granular layer) of the epidermis. The spinous cells are arranged several layers thick to form a net-like covering.
An external spine having multiple points. Etymology: Greek skolos, a prickle. cf. chalaza. plural: scoli sensu Latin term meaning "in the sense of". sequestering The process of animals accumulating poisonous compounds from the food they are eating in order to become poisonous themselves for their predators.
The vertebral column, also known as the spinal column, spine or backbone, is the core part of the axial skeleton in vertebrate animals.The vertebral column is the defining and eponymous characteristic of the vertebrate endoskeleton, where the notochord (an elastic collagen-wrapped glycoprotein rod) found in all chordates has been replaced by a segmented series of mineralized irregular bones ...
A team of international researchers found that the answer lies in their DNA, tracing the origin to one ancient gene family that’s responsible for the prickles in all these variations, according ...