Explain with diagram the placentation found in pea and mustard.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Solution:
- Marginal Placentation (Pea):
- Ovary unilocular (one-chambered)
- Placenta forms a ridge along ventral suture
- Ovules borne in two rows on the ridge
- Characteristic of monocarpellary ovaries
- Example: Pea, bean (Fabaceae)
- Parietal Placentation (Mustard):
- Ovary unilocular, becomes bilocular due to false septum
- Ovules develop on inner ovary wall (periphery)
- Placenta on parietal wall
- Example: Mustard, Argemone (Brassicaceae)
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