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A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
H
- hairs - colorless, elongate unicellular or multicellular structures
- haplobiontic - having single, free-living phase in its life history
- haploid - having single basic set of chromosomes
- haptera - multicellular structures that form holdfasts of kelps
- haptonema - cellular extension with distinctive structure characteristic
of some Prymnesiophyceae
- hermaphrodite - having both male and female reproductive organs,
capable of forming male and female gametes on the same individual
- heterocyst - specialiazed, thick-walled cell of some Cyanobacteria
which may be site of nitrogen fixation
- heterogamous - sexual reproduction where gametes are not identical
in size or shape
- heteromorphic - having life
history phases morphologically different, having distinctly different
gametophyte and sporophyte stages
- heterotrichy - filamentous thallus having erect and prostrate parts
- heterotrophic - having non-autrotrophic, non-photosynthetic nutrition
- holdfast - structure of
attachment to substratum
- holoplankton - organisms that spend their entire existence as free-floating
drifters
- hypocingulum - part
of the girdle of a diatom frustule adjacent to the hypovalve
- hypocone - portion of dinoflagellate cell posterior to the cingulum
- hypogynous cell - cell directly beneath the carpogonium in the Rhodophyceae
- hypolithic - living on lower surface of rocks
- hypotheca - part of
diatom frustule consisting of hypovalve and hypocingulum
- hypovalve - flattened
or covex plate of diatom frustule opposite the epivalve
A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
Last updated: Jan. 06, 2005
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