1) Outer coat of a pollen grain
Found on
https://www.crosswordclues.com/clue/exine
(from the article `pollen`) ...parts. The central cytoplasmic part is the source of nuclei responsible for fertilization. The other parts constituting the wall of the grain are ... ...or lose their inner cell walls, dissociate from each other, and become amoeboid among the microsporocytes. The pollen grains develop a thick wall ... [...
Found on
http://www.britannica.com/eb/a-z/e/59
<botany> External part of pollen wall that is often elaborately sculptured in a fashion characteristic of the plant species. Contains sporopollenin. The term is also used for the outer part of a spore wall. ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
External part of pollen wall that is often elaborately sculptured in a fashion characteristic of the plant species. Contains sporopollenin. The term is also used for the outer part of a spore wall.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
the outer coat of a spore, esp. a pollen grain.
Found on
https://www.infoplease.com/dictionary/exine
No exact match found.
