NTA Abhyas NEET2020BotanyMorphology of Flowering PlantsPractice
Which is false for vexillary or papilionaceous aestivation?
Options
- ATwo smallest anterior petals are known as keel.
- BTwo lateral petals are known as wing.
- CThe largest standard petal is posterior.
- DThe largest standard petal is anterior and overlaps wing.
Correct answer
D. The largest standard petal is anterior and overlaps wing.
Step-by-step solution
In vexillary aestivation the largest posterior petal is called as standard or vexillum, two lateral petals are called as wings and the two anterior smallest petals which are fused are known as keel. Vexillary aestivation thus shows 1 + 2 + B arrangement of petals.