| 词汇 | dorsiventral |
| 释义 | dorsiventral adjective uk /ˌdɔː.sɪˈven.trəl/ us /ˌdɔːr.səˈven.trəl/ anatomy, biology specialized(alsodorsoventral) having or relating to clearly different dorsal and ventral surfaces: Leaves at the top of the canopy are typical sun leaves with a dorsiventral anatomy. There is a dorsoventral asymmetry, with dorsal cells being larger than ventral cells. The author restricts the term dorsiventral to cases where the dorsal and ventral surfaces exhibit organic differences. Dorsiventral leaves usually grow horizontally, with distinct upper and lower surfaces. Most of the ventricles are found in the lower epidermis of the dorsiventral leaf. Surfaces of objects -backed base bases bed crust escutcheon flank floor front mammillated meniscus multi-sided nap obverse outside overlay rear side substrate superficialis You can also find related words, phrases, and synonyms in the topics: The body Examples of dorsiventraldorsiventral In marsupials, dorsiventral flattening of the spermatid nucleus during spermiogenesis means that the acrosome commits to sit as a flat plate, or compact button, on the dorsal nuclear surface. Changes in temperature cause flowers to open or close by movements which resemble the simple nutation of dorsiventral organs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The laminae are generally dorsiventral and lack secretory cavities. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Simple nutation occurs in dorsiventral organs, such as flat leaves, both foliage and floral. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Molecular genetics has also shed light on the relation between radial symmetry (characteristic of stems) and dorsiventral symmetry (typical for leaves). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is foliose, dorsiventral, lobate, and often rosette-forming, though many species can also be irregularly spreading. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They provide good morphological detail, especially of dorsiventral (flattened) plant parts such as leaves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are dorsiventral, meaning they have distinct upper and lower surfaces, with the ventral, or lower, surface being planar and the dorsal, or upper, surface being convex. 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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