Chalaza Nucellus - 搜索图片

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{:(A,B,C,D),("Micropyle","Egg","Embryo sac","Chalaza"):}
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Lilium ovary
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Describe with a Labelled Diagram of a Typical Ovul…
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Ovule - Definition, Types, Components and Function | Biolog…

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Difference between Anatropous and Orthotropous Ovule

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