Correct position of floral parts over thalamus in the mustard plant is:
Gynoecium occupies the highest position, while the other parts are situated below it.
Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary.
Gynoecium is present in the center and other parts cover it partially.
Gynoecium is situated in the center, and other parts of the flower are located at the rim of the thalamus, at the same level.
, the mustard flower is described as hypogynous. In hypogynous flowers, the gynoecium occupies the highest position while the other parts (calyx, corolla, and androecium) are situated below it. The ovary in such flowers is said to be superior.
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