单词	zygomorphic
释义	zygomorphic /ˌzʌɪɡə(ʊ)ˈmɔːfɪk / /ˌzɪɡə(ʊ)ˈmɔːfɪk/ adjective Botany (Of a flower) having only one plane of symmetry, as in a pea or snapdragon; bilaterally symmetrical. Compare with actinomorphic.The gynoecium is on the median plane of these zygomorphic flowers and not oblique as described in taxonomic literature.... Alternatively, the gynoecium of a zygomorphic flower can be on the median plane of the flower, but the entire flower can be oblique to the axillary plane. It is a family of predominantly annual and perennial herbs with a semi-succulent habitus, which can be easily distinguished from other balsaminoids by its zygomorphic flowers with a spurred petaloid sepal. Derivatives zygomorphy noun ... Growth of the corolla and androecium show a dorso-ventral asymmetry that also results in zygomorphy. In addition, as suggested by Leins and Erbar, the zygomorphy of the flowers found in the Lobelias makes them more effective for pollination than actinomorphic flowers. Zygomorphic flowers were mostly found among hummingbird- and medium-large bee-pollinated species and, in fact, zygomorphy is largely known as a visual attractant for some groups of pollinators such as bees and hummingbirds.
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