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Outer envelope of pollen grains made …

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Outer envelope of pollen grains made of highly resistant substance what is that substance
  • 4 answers

Tani Gupta 2 years, 4 months ago

Exine wall and it is made up of sporopollenin . Sporopollenin is the hardest organic material ever known . Due to this hard covering of sporopollenin, pollen grains could be stored as fossils .

Maitri Jigneshkumar Patel 2 years, 4 months ago

Sporopollenin

Aakriti Sharma 2 years, 5 months ago

Sporopollenin

Account Deleted 2 years, 5 months ago

Sporopollenin
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