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Examples ofmegasporangium
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The enclosure of themegasporangiumin the integument would additionally not only provide protection against herbivory, it would provide protection against desiccation as well.
From theCambridge English Corpus
Fig. 3o) there is a tear-drop shaped scar along most of the pedicel, which is assumed to be the attachment scar of themegasporangium.
From theCambridge English Corpus
It has partially developed vessels as found in the angiosperms, and themegasporangiumis covered by three envelopes, like the ovary structure of angiosperm flowers.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The remnants of themegasporangiumtissue (the nucellus) surround the megagametophyte.
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This example is from Wikipedia and may be reused under a CC BY-SA license.It is structurally and functionally equivalent to themegasporangium.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The ovule initially consists of a stalked, integumented "megasporangium".
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This example is from Wikipedia and may be reused under a CC BY-SA license.Megaspores develop within themegasporangium; typically one of the four spores produced by meiosis gains bulk at the expense of the remaining three, which disappear.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In these the microgametophyte is reduced to pollen and the megagametophyte remains inside themegasporangium, attached to the parent plant.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Themegasporangiumbears an unopened distal extension protruding above the multilobed integument.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Themegasporangiumbears an unopened distal extension protruding above the mutlilobed integument.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Themegasporangiumhas a multilobed integument, and there is an extension on themegasporangiumthat suggests an adaptation to wind pollination.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This might, through fusion between lobes and between the structure and themegasporangium, have produced an integument.
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This example is from Wikipedia and may be reused under a CC BY-SA license.One kind, themegasporangium, produces only a single large spore (a megaspore).
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This example is from Wikipedia and may be reused under a CC BY-SA license.The megagametophyte develops within the megaspore of extant seedless vascular plants and within themegasporangiumin a cone or flower in seed plants.
FromThis example is from Wikipedia and may be reused under a CC BY-SA license.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Amegasporangiuminvested in protective layer called an integument is known as an ovule.
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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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- accrued income
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- accruing
- acct.
- acculturate
- acculturation
- accumulate
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- accumulated amortization
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