英语词汇“coleoptile”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

coleoptile

/ˌkɒlɪˈɒptʌɪl

noun Botany

A sheath protecting a young shoot tip in a grass or cereal.Samples of roots, shoots, coleoptiles, leaves, whole seeds, endosperm, and embryos were taken at the times indicated in the Results....

The coleoptile and all prior sheaths surrounding the fifth leaf were removed down to the seed.
However, in coleoptiles, hypocotyls and epicotyls, gravity can be perceived along the whole length of the responding region and there is no such need to postulate any longitudinal transfer of a message.

Origin

Mid 19th century: from Greek koleon 'sheath' + ptilon 'feather'.

单词	coleoptile
释义	coleoptile /ˌkɒlɪˈɒptʌɪl / noun Botany A sheath protecting a young shoot tip in a grass or cereal.Samples of roots, shoots, coleoptiles, leaves, whole seeds, endosperm, and embryos were taken at the times indicated in the Results.... The coleoptile and all prior sheaths surrounding the fifth leaf were removed down to the seed. However, in coleoptiles, hypocotyls and epicotyls, gravity can be perceived along the whole length of the responding region and there is no such need to postulate any longitudinal transfer of a message. Origin Mid 19th century: from Greek koleon 'sheath' + ptilon 'feather'.
随便看	paunch-bellied paunch-gut paunch-gutted paunchiness paunch-kettle paunchy pauper pauperage pauperdom pauperess pauper funeral pauper grave pauperism pauperization pauperize pauperous pauper's funeral pauper's grave paupiette Pauranic Pauranik Pauranika pauraque paurometabolous pauropod