Placoid scales | 水產百科網
,Eachplacoidscaleconsistsofaflattenedrectangularbaseplatewhichisembeddedinthefish,andvariouslydevelopedstructures,suchasspines,whichproject ...,Placoidscales(ordenticles)arespiny,toothlikeprojectionsseenonlyincartilaginousfishes.Ganoidscales,sometimesconsideredamodificationoftheplacoid ...,Cycloidscales—Theplacoidscalesofcartilaginousfishesarealsocalleddermaldenticlesandarestructurallyhomologouswithvertebrateteeth.Most ...,詞典>placoidscale的例句.placoidscale尚未收入劍橋詞典。敬請幫助！添...
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Placoid Scales on Sharks and Rays | 水產百科網
Placoid scales | 水產百科網
Each placoid scale consists of a flattened rectangular base plate which is embedded in the fish, and variously developed structures, such as spines, which project ... Read More
Placoid scale | 水產百科網
Placoid scales (or denticles) are spiny, toothlike projections seen only in cartilaginous fishes. Ganoid scales, sometimes considered a modification of the placoid ... Read More
Fish scale | 水產百科網
Cycloid scales — The placoid scales of cartilaginous fishes are also called dermal denticles and are structurally homologous with vertebrate teeth. Most ... Read More
placoid scale | 水產百科網
詞典 > placoid scale的例句. placoid scale 尚未收入劍橋詞典。敬請幫助！ 添加定義. Their skin is smooth and largely covered by placoid scales, and their color ... Read More
Dogfish Shark Placoid Scale | 水產百科網
Dogfish Shark Placoid Scale ... Scales are small plates that form part of the skin of certain animals. They provide protection from the environment and from predators ... Read More
placoid scale | 水產百科網
Placoid denticles are found on sharks, rays, and chimaeras. Not really a true “scale,” like ctenoid or cycloid scales, placoid denticles are actually modified teeth. Read More
Placoid Scale | 水產百科網
placoid scale (dermal denticle) Type of scale that comprises the basic unit of the hard skin cover of sharks. It consists of a hard base embedded in the skin and a ... Read More
Functional Aspects of Placoid Scales | 水產百科網
由 W Raschi 著作 · 1992 · 被引用 128 次 — The function of placoid scales (dermal denticles) is considered along three perspectives. Firstly, in a historical context, denticles have been modified along ... Read More
Placoid scale | 水產百科網
The bulk of the scale consists of dentine surrounding a central pulp cavity. Unlike the scales of bony fish, placoid scales stop growing after they reach a certain ... Read More
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