After Pollination,which Event Is Crucial for Fertilization

question 12

Multiple Choice

After pollination,which event is crucial for fertilization?

• A) Sperm must swim to the egg and the polar nuclei.
• B) Petals must close around the reproductive parts.
• C) Meiosis must occur within the pollen grain.
• D) A pollen tube must grow from the stigma to the ovule.
• E) An insect must deliver pollen to the stigma.

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