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Problem: In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?1. micropyle2. style3. ovary4. stigmaa. 4 → 2 → 3 → 1b. 4 → 3 → 2 → 1c. 1 → 3 → 4 → 2d. 3 → 2 → 4 → 1

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In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?

1. micropyle
2. style
3. ovary
4. stigma

a. 4 → 2 → 3 → 1

b. 4 → 3 → 2 → 1

c. 1 → 3 → 4 → 2

d. 3 → 2 → 4 → 1

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