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Placentation

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Usama Abdel-Hameed

The document describes different types of plant ovary structures based on their locules, ovules, and placentation. An ovary can have multiple locules making it axile, one locule making it basal or apical depending on placental position, many ovules with marginal placentation on the ventral suture, ovules on the peripheral walls making it parietal, or ovules on a central placenta making it free central.

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1. Ovary more than one locule,…………………..……..Axile 1. Ovary one locule 2. One ovule 3. Placenta at the base of the ovary…………...…..Basal 3. Placenta at the top of the ovary……...........…..Apical 2. Many ovules 4. Placenta on ventral suture of the ovary…....Marginal 4. Ovules on ovary peripheral walls………...…Parietal 4. Ovules on the central placenta……....….Free central
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Placentation

  • 1. 1. Ovary more than one locule,…………………..……..Axile 1. Ovary one locule 2. One ovule 3. Placenta at the base of the ovary…………...…..Basal 3. Placenta at the top of the ovary……...........…..Apical 2. Many ovules 4. Placenta on ventral suture of the ovary…....Marginal 4. Ovules on ovary peripheral walls………...…Parietal 4. Ovules on the central placenta……....….Free central