In botany, what is the decay-resistant outer coating of a pollen grain or spore called?
Pollen Extine Pollens Monosulcate Pollen grain Colpus Pollen grains Microsporogenesis Porate pollen Exine
microsporogenesis pollen pollen grain pollen grains exine extine pollens porate pollen monosulcate colpus
exine
WikipediaEntity
Exine