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B
Descending imbricate
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C
Ascending imbricate
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D
Contorted
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Solution
The correct option is B Descending imbricate Pisum sativum belongs to the family Papilionaceae or Fabaceae. The aestivation of the flower is descending imbricate also known as vexillary imbricate. It is characterised by a large petal called standard petal that overlaps the lateral petals called the wings. The wings further overlap the anterior petal called keel. So, the petals are arranged in a descending pattern.
Hence, the correct answer is 'Descending imbricate'