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Several organisms are capable of rolling locomotion. However, true wheels and propellers—despite their utility in human vehicles—do not seem to play a significant role in the movement of living things (with the exception of certain flagella, which work like corkscrews). Biologists have offered several explanations for the apparent absence of biological wheels, and wheeled creatures have appeared often in speculative fiction.

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  • Locomoción rotativa en los sistemas vivos (es)
  • Lokomosi berputar dalam sistem kehidupan (in)
  • Rotating locomotion in living systems (en)
  • 生命系统中的旋转运动 (zh)
rdfs:comment
  • 轮子和螺旋桨这样的转动结构对于交通工具来说必不可少,但对似乎并没有重要意义。尽管存在一些能够滚动运动的生物,也有鞭毛利用旋转来推进生物前进的例子,但总体上可转动结构在生物里十分罕见。 在生命体中,轮式结构的缺乏可以从两个方面来粗略解释。首先,在自然选择下,生物为了进化出轮子,必须先经受发育和进化的考验。另一方面,在自然环境中,轮式结构与其他诸如跑步或滑行等运动方式相比时,并不具有优势。这解释了为什么生物体即便能进化出轮式结构,拥有这一结构的生物也极为稀有。环境因素下体现的劣势统一也解释了为什么有一些历史文明曾经放弃了使用轮子的交通方式。 (zh)
  • Existen dos modos distintos de locomoción que utilizan la rotación: primero, el simple rodaje (rodadura); y segundo, el uso de ruedas o hélices, que giran sobre un eje en relación con un cuerpo fijo. Mientras que muchas criaturas emplean el primer modo, el segundo está restringido a organismos microscópicos unicelulares. (es)
  • Ada dua cara agar benda alami dan buatan dapat menggunakan rotasi untuk bergerak. Salah satu caranya adalah dengan bergulir sepenuhnya. Cara lainnya adalah dengan mekanisme benda berputar pada suatu poros, seperti roda atau baling-baling. Beberapa makhluk hidup bergerak dengan berguling, tetapi tidak ada makhluk hidup yang tampaknya menggunakan roda. Ahli biologi telah mengkaji persoalan ini. Sementara penulis fiksi ilmiah dan fantasi telah menciptakan banyak hewan beroda dalam berbagai kisah. (in)
  • Several organisms are capable of rolling locomotion. However, true wheels and propellers—despite their utility in human vehicles—do not seem to play a significant role in the movement of living things (with the exception of certain flagella, which work like corkscrews). Biologists have offered several explanations for the apparent absence of biological wheels, and wheeled creatures have appeared often in speculative fiction. (en)
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