Multiple choice

The pollen grain is ______ nucleated.

  1. uni

  2. bi

  3. poly

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollen grains are typically shed at a 2-celled stage containing a vegetative cell and a generative cell, which means they are bi-nucleated. Distractors like uni-nucleated fail to account for the mitotic division of the microspore nucleus.

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