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The placentation in argemone flower is c...

The placentation in argemone flower is correctly displayed by which one of the below diagrams?

A

B

C

D

Text Solution

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The correct Answer is:
To determine the correct placentation in the Argemone flower, we need to understand the types of placentation and identify which one corresponds to Argemone. ### Step-by-Step Solution: 1. **Understanding Placentation**: Placentation refers to the arrangement of ovules within the ovary of a flower. There are several types of placentation, including marginal, axial, parietal, and free central. 2. **Identifying Types of Placentation**: - **Marginal Placentation**: The placenta forms a ridge along the ventral suture of the ovary, with ovules attached along this ridge. This type is seen in plants like peas. - **Axial Placentation**: The placenta is located centrally, and the ovary is divided into loculi (compartments). This type is found in tomatoes and citrus fruits. - **Parietal Placentation**: The ovules are attached to the sides of the ovary, and the placenta is in the center. In some cases, a false septum (replum) may divide the ovary. This type is characteristic of Argemone and mustard. - **Free Central Placentation**: The placenta is in the center of the ovary, and ovules are attached to it freely. This type is observed in dianthus and primrose. 3. **Identifying the Correct Diagram**: Since Argemone exhibits parietal placentation, we need to look for a diagram that shows ovules attached to the sides of the ovary with a central placenta. 4. **Conclusion**: The correct diagram that represents the placentation in Argemone is the one that illustrates parietal placentation. Thus, the answer is option number 4. ### Final Answer: The correct answer is option number 4, which displays parietal placentation as seen in Argemone.
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