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Question
Aestivation in which members of a whorl lie close to each other without overlapping:
Aestivation in which members of a whorl lie close to each other without overlapping:
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Solution
The correct option is B Valvate
The mode of arrangement of sepals and petals in the flower is called aestivation.
In valvate aestivation, margins of the sepals or petals are in contact, without overlapping. Example: mustard, Calotropis.
If the margins of sepals or petals overlap one another but not in any particular direction then the aestivation is called imbricate. Example: Cassia and gulmohur.
If one margin of sepal or petal overlaps that of the next one, then the aestivation is called twisted. Example: China rose, lady’s finger, cotton.
If the largest petal (standard) overlaps with the two lateral petals (wings) which inturn overlaps two smaller anterior petals (keel) then the aestivation is known as vexillary or papilionaceous. Example: Pea and bean flower.
The mode of arrangement of sepals and petals in the flower is called aestivation.
In valvate aestivation, margins of the sepals or petals are in contact, without overlapping. Example: mustard, Calotropis.
If the margins of sepals or petals overlap one another but not in any particular direction then the aestivation is called imbricate. Example: Cassia and gulmohur.
If one margin of sepal or petal overlaps that of the next one, then the aestivation is called twisted. Example: China rose, lady’s finger, cotton.
If the largest petal (standard) overlaps with the two lateral petals (wings) which inturn overlaps two smaller anterior petals (keel) then the aestivation is known as vexillary or papilionaceous. Example: Pea and bean flower.
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