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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.
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 ...
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 ...
Myocarditis refers to an underlying process that causes inflammation and injury of the heart. It does not refer to inflammation of the heart as a consequence of some other insult. Many secondary causes, such as a heart attack, can lead to inflammation of the myocardium and therefore the diagnosis of myocarditis cannot be made by evidence of ...
Cartilage inflammation (technically known as chondritis) that is relapsing is very characteristic of the disease. [3] These recurrent episodes of inflammation over the course of the disease may result in breakdown and loss of cartilage. [3] The signs and symptoms of cartilage inflammation in various parts of the body will be described first.
As well as defending against herbivores, spines help prevent water loss by reducing air flow close to the cactus and providing some shade. In the absence of true leaves, cacti's enlarged stems carry out photosynthesis. Cactus spines are produced from specialized structures called areoles, a kind of highly reduced branch. Areoles are an ...
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 ...