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  • The inner most layer of microsporangium that nourishes a ...
Multiple choice

The inner most layer of microsporangium that nourishes a developing pollen grain is known as

  1. tapetum

  2. endodermis

  3. endothecium

  4. sporogenous cell

  5. sporopollenin

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A Correct answer
Explanation

It provides nourishment to pollen grains.

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