An inert substance forming the resistant outer covering of spores. Cf. sporopollenin, n.
| 单词 | θ22171 |
| 释义 | the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > type of > microspore or microsporange > substance forming outer coating (2) sporonin1928 An inert substance forming the resistant outer covering of spores. Cf. sporopollenin, n. sporopollenin1931 An inert substance, consisting largely of polysaccharides, that forms the resistant outer coating of spores and pollen grains. |
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