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Question
Each pollen tube has ______.
Options
one generative nucleus and one tube nucleus
one generative nucleus and two tube nuclei
two generative nuclei and one tube nucleus
two generative nuclei and two tube nuclei
MCQ
Fill in the Blanks
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Solution
Each pollen tube has two generative nuclei and one tube nucleus.
Explanation:
A mature pollen tube typically carries two male gametes formed when the generative nucleus divides, and one tube (vegetative) nucleus. The tube nucleus eventually degenerates.
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