Multiple choice

Ubish granules containing sporopollenin are produced by

  1. endothelium

  2. middle layers

  3. tapetum

  4. epithelium

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The tapetum is the innermost layer of the anther wall. It is responsible for secreting sporopollenin, which forms the Ubisch granules that contribute to the outer exine layer of pollen grains.

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