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In China rose, the flowers are:
Option: 1
Actinomorphic, hypogynous with twisted aestivation
Option: 2
Actinomorphic, epigynous with valvate aestivation
Option: 3
Zygomorphic, hypogynous with imbricate aestivation
Option: 4
Zygomorphic, epigynous with twisted aestivation
Answers (1)
In china rose, the flowers are actinomorphic, hypogynous with twisted aestivation. Most flowers are actinomorphic meaning they can be divided into 3 or more identical sectors which are related to each other by rotation about the centre of the flower. Typically, each sector might contain one tepal or one petal and one sepal and so on. It may or may not be possible to divide the flower into symmetrical halves by the same number of longitudinal planes passing through the axis. Actinomorphic flowers are also called radially symmetrical or regular flowers. In hypogynous flowers, the perianth and stamens are attached to the receptacle below the gynoecium; the ovary is superior to these organs, and the remaining floral organs arise from below the point of origin of the carpel. Contorted or twisted is when every petal or sepal is outside its neighbour on one margin, and inside its neighbour on the other margin. So, china rose is actinomorphic, hypogynous with twisted aestivation.
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