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Prickles on a blackberry branch. 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 spines are the relatively large, radiating organs; the glochids are the fine prickles in the centres of the bunches. Glochids ( Opuntia microdasys monstrose ) Glochids or glochidia ( sg. : "glochidium") are hair-like spines or short prickles, generally barbed, found on the areoles of cacti in the sub-family Opuntioideae .
Myocarditis is the inflammation of the heart muscle; Endocarditis is the inflammation of the endocardium; Pancarditis, also called perimyoendocarditis, is the inflammation of the entire heart: the pericardium, the myocardium and the endocardium; Reflux carditis refers to a possible outcome of esophageal reflux [citation needed] (also known as ...
Inflammation in these spots can cause cells to die or damage tissues or nerves, research shows. The bottom line is, dry eyes are more than just annoying. The bottom line is, dry eyes are more than ...
A plant's leaves and stem may be covered with sharp prickles, spines, thorns or trichomes- hairs on the leaf often with barbs, sometimes containing irritants or poisons. Plant structural features such as spines, thorns and awns reduce feeding by large ungulate herbivores (e.g. kudu , impala , and goats ) by restricting the herbivores' feeding ...
Opuntia, commonly called the prickly pear cactus, is a genus of flowering plants in the cactus family Cactaceae, many known for their flavorful fruit and showy flowers. [1] Cacti are well-adapted to aridity; however, they are still vulnerable to alterations in precipitation and temperature driven by climate change. [ 2 ]
Prickles and thorns are an evolved defense against herbivores — animals that eat plants — and can also aid in growth, plant competition and water retention, according to the study. It was ...
Other cacti have hooked spines. Sometimes, one or more central spines are hooked, while outer spines are straight (e.g., Mammillaria rekoi). [11] In addition to normal-length spines, members of the subfamily Opuntioideae have relatively short spines, called glochids, that are barbed along their length and easily shed. These enter the skin and ...