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Although some authors, especially in the 19th century and earlier, use the word acotyledon to include plants which have no cotyledons because they lack seeds entirely (such as
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or monocots have one seed lobe, which is often modified to absorb stored nutrients from the seed so never emerges from the seed or becomes photosynthetic.
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or dicots have two cotyledons and often germinate to produce two leaf-like cotyledons.
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50:. Orchid seeds are tiny with underdeveloped embryos. They depend on
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lack flowers but may have two or more cotyledons in the seedling.
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75:or angiosperms are divided into two large groups.
138:A Dictionary of Science, Literature, & Art
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178:American Dictionary of the English Language
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151:John Lindley, Thomas Moore, ed. (1866),
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54:for their early nutrition so are
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132:William Thomas Brande (1842),
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210:. You can help Knowledge by
38:or spermatophytes that lack
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277:Plant morphology stubs
157:The treasury of botany
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34:is used to refer to
267:Plant reproduction
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56:myco-heterotrophs
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119:the original
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81:Dicotyledons
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89:gymnosperms
36:seed plants
251:Categories
95:References
87:and other
42:, such as
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32:Acotyledon
172:(1828),
85:Conifers
22:Acaridae
16:For the
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48:dodder
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