Level 11 Level 13
Level 12

Ultrastructure. Basic layers


23 words 0 ignored

Ready to learn       Ready to review

Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

All None

Ignore?
Ectexine
The outer part of the exine, which stains positively with basic fuchsin in optical microscopy and has higher electron density in conventionally prepared TEM sections. Orthographical variant: ektexine.
Ectointine
Synonym of exintine.
Ektexine
Orthographic variant of ectexine.
Endexine
The inner part of the exine which remains relatively unstained with basic fuchsin in optical microscopy and has a lower electron density in conventionally prepared TEM sections.
Exine
The outer layer of the wall of a palynomorph, which is highly resistant to strong acids and bases, and is composed primarily of sporopollenin.
Exine 1
Synonym of ectexine.
Exine 2
Synonym of endexine.
Exoexine
Synonym of sexine.
Exosporium
Synonym of exine.
Foot layer
The inner layer of the ectexine.
Infratectum
A general term for the layer beneath the tectum, which may be alveolar, granular,columellar, or structureless.
Intexine
Synonym of nexine.
Intine
The innermost of the major layers of the pollen grain wall underlying the exine and bordering the surface of the cytoplasm.
Medine
A term applied to a faintly lamellated, acetolysis resistant layer considered to be situated between intine and exine.
Mesine
A laminated, electron-dense layer considered to lie between the intine and the exine.
Nexine
The inner, non-sculptured part of the exine which lies below the sexine.
Nexine 1
Synonym of foot layer, pedium, sole.
Nexine 2
Synonym of endexine.
Pedium
Synonym of foot layer.
Sexine
The outer, sculptured layer of the exine, which lies above the nexine.
Sexine 1, 2, 3, 4, 5
A system of sexine stratification in which sexine 1 is the innermost and sexine 5 in the outermost layer of the sexine.
Sole
Synonym of foot layer.
Tectum
The layer of sexine, which forms a roof over the columellae, granules or other infratectalelements.