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gonidium
[ goh-nid-ee-uhm ]
noun
- (in algae) any one-celled asexual reproductive body, as a tetraspore or zoospore.
- an algal cell, or a filament of an alga, growing within the thallus of a lichen.
gonidium
/ ɡəˈɪɪə /
noun
- a green algal cell in the thallus of a lichen
- an asexual reproductive cell in some colonial algae
gonidium
/ ō-ĭ′ŧ-ə /
, Plural gonidia
- An asexual reproductive cell found in certain algae that form colonies. Gonidia undergo repeated mitoses to form new colonies, which then hatch out of the parent colonies.
- A chlorophyll-bearing, photosynthetic algal cell housed in the thallus of a lichen.
Derived Forms
- ˈԾ徱, adjective
Other yvlog Forms
- ·Ծi· ·Ծi adjective
- ·Ծi·Ǿ adjective
- inter··Ծi· adjective
yvlog History and Origins
yvlog History and Origins
Origin of gonidium1
Example Sentences
A, of Ustilago receptaculorum; B, of Tilletia Caries. sp, The gonidium. pm, The promycelium. d, The sporidia: in B the sporidia have coalesced in pairs at v.
Dr. Bornet believed himself to have established that every gonidium of a lichen may be referred to a species of algæ, and that the connection between the hypha and gonidia is of such a nature as to exclude all possibility of the one organ being produced by the other.
It is also to be noted as a significant fact, that the cellulose wall was intact at the apex, instead of showing the opening through which in ordinary cases the gonidium escapes.
The old cell wall seems to offer considerable resistance to the escape of the gonidium, for the latter, which displays remarkable elasticity, is pinched nearly in two while forcing its way through, assuming an hour glass shape when about half out.
The motile force is imparted to the gonidium by dense rows of waving cilia with which it is completely surrounded.
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