| 释义 |
noun usually Zoology (in an echinoderm) each of a large number of small flexible hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system. Example sentencesExamples - We demonstrate that there is considerable variation in tube-foot morphology among members of the Asteroidea including an entirely new type of flat-tipped, non-suckered tube foot in species belonging to the order Valvatida.
- Each canal has a lateral connection which leads to a tube foot, which may be composed of three parts.
- Scanning electron microscopy revealed that the tube feet of Acodontaster conspicuus lacked suckers, with no distinct concavity in the center of the disc, as seen in a typical flat-tipped suckered tube foot.
- This indicates that considerable morphological change occurs in the post-juvenile tube foot.
- Each tube foot is made of an ampulla, podium, and usually a sucker.
noun usually Zoology (in an echinoderm) each of a large number of small flexible hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system. Example sentencesExamples - Each canal has a lateral connection which leads to a tube foot, which may be composed of three parts.
- Scanning electron microscopy revealed that the tube feet of Acodontaster conspicuus lacked suckers, with no distinct concavity in the center of the disc, as seen in a typical flat-tipped suckered tube foot.
- We demonstrate that there is considerable variation in tube-foot morphology among members of the Asteroidea including an entirely new type of flat-tipped, non-suckered tube foot in species belonging to the order Valvatida.
- This indicates that considerable morphological change occurs in the post-juvenile tube foot.
- Each tube foot is made of an ampulla, podium, and usually a sucker.
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