释义 |
DictionarySeeplantannual plant
annual plant[′an·yə·wəl ′plant] (botany) A plant that completes its growth in one growing season and therefore must be planted annually. annual plant annual rings A plant whose life cycle is completed in a single growing season.annual plant
annual plant any plant that germinates from seed, grows to maturity and produces new seed all within one year or growing season. Since the life-cycle duration is so short, annuals are usually herbaceous rather than woody. Examples include groundsel, shepherd's purse. See BIENNIAL, PERENNIAL. |