| 词汇 | cleistogamous |
| 释义 | cleistogamous adjective biology specializeduk /klaɪˈstɒɡ.ə.məs/ us /klaɪˈstɑː.ɡə.məs/ Cleistogamous plants have small, closed flowers, that pollinate(= create new plants) themselves, often in addition to larger, open flowers on the same plant. Cleistogamous flowers are small and always closed: （植物）闭花授粉的 A cleistogamous species consists of individuals that produce both chasmogamous (open) and cleistogamous (permanently closed) flowers.闭花授粉物种包括那些既能开花授粉（花朵开放的）又能闭花授粉（花朵永久闭合的）的植物。 The species is cleistogamous, as are many annual grasses in California. Compare chasmogamous Cleistogamous (i.e. closed) flowers have very small petals and produce little pollen. In addition to producing open flowers, many species produce cleistogamous flowers that have to self-fertilize. Several of these species are often referred to incorrectly as being cleistogamous. Plant reproduction anther asexual reproduction asexuality asexually barrenness breeder chasmogamous endosperm germinate pistillate placentation pollinate pollination pollinator self-incompatible self-pollination sexlessly siltation sporangium stamen You can also find related words, phrases, and synonyms in the topics: Flowers - general words Examples of cleistogamouscleistogamous They are usually cleistogamous, remaining closed and self-pollinating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Plants may also produce non-showy cleistogamous flowers, which do not require cross-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The flower has 5 white petals, but some flowers are cleistogamous and lack petals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The upper inflorescences produce several open flowers, and there may be some closed, cleistogamous flowers lower on the plant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The second type of flower is cleistogamous and borne at the base of the plant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A cleistogamous flower is usually smaller and requires less energy to produce. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are cleistogamous flowers, which self-fertilize and never open, and chasmogamous flowers, which open and receive pollen from other plants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some "cleistogamous" flowers never open, in contrast to "chasmogamous" flowers that open and are then pollinated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some can have cleistogamous inflorescences sheathed on their stems. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are both cleistogamous flowers which never open, and chasmogamous flowers which open and allow insects inside; both types produce seed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are two types of flowers, blooms that open and cleistogamous flowers that remain closed and self-pollinate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some of the spikelet branches develop within the sheaths of the leaves and are cleistogamous. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The flower is usually cleistogamous, self-fertilizing and sometimes never even opening. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Inflorescence with solitary flowers or paniculate like, some species have cleistogamous flowers produced after or before the production of typically petaled flowers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some species have mixed mating systems, producing both chasmogamous and cleistogamous flowers. 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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