| 词汇 | leaf-gap |
| 释义 | BETA leaf gapcollocation in Englishmeanings of leafand gapThese words are often used together. Click on the links below to explore the meanings. leaf noun[ C ] uk /liːf/ us /liːf/ one of the flat, usually green parts of a plant that are joined at one end to the stem ... See more at leaf gap noun uk /ɡæp/ us /ɡæp/ an empty space or opening in the middle of something or between ... See more at gap Examples of leaf gapleaf gap The leafgap is a break in the vascular tissue of a stem above the point of attachment of a leaf trace. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The leaf is connected to the stem by the leaf trace, which grows through the leafgap. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the classical concept of a microphyll, this vein emerges from the protostele without leaving a leafgap. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In cross section, the vascular tissue does not form a complete cylinder where a leafgap occurs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some genera of ferns display complex leaves that are attached to the pseudostele by an outgrowth of the vascular bundle, leaving no leafgap. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A leafgap is where the vascular tissue branches off to a frond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The numerous leaf gaps and leaf traces give a dictyostele the appearance of many isolated islands of xylem surrounded by phloem. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The stem anatomy of ferns is more complicated than that of dicots because fern stems often have one or more leaf gaps in cross section. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Leaf gaps are small areas above the node of some leaves where there is no vascular tissue, as it has all been diverted to the leaf. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Siphonosteles often have interruptions in the vascular strand where leaves (typically megaphylls) originate (called leaf gaps). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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