spore mother

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Mosses and Liverworts
... stalk, at the tip of which is formed a sporangium. The sporangium is filled with spore mother cells sealed by an operculum, and covered with a calyptra. The calyptra develops from the ... is responsible for the common name ("haircap moss") of this species. During the summer, each spore mother cell undergoes meiosis, producing four haploid spores - the start of the new gametophyte generation. Late ...
users.rcn.com

LIfe Cycle Quiz
... a fern 8. seed coat of a seed 9. sporangium of a moss 10. egg mother cell 11. archegonium of a moss 12. pistil of a flower 13. endosperm of a ... . rhizoid of a moss 15. embryo of a seed 16. sperm mother cell 17. polar nucleus in embryo sac 18. spore mother cell II. Moss, Fern or Both Questions For the following choices ...
waynesword.palomar.edu

Bryophyta
... Sporangium - Outer layer - sterile jacket, inside is sporogenous tissue which forms spore mother cells. Meiosis - spore tetrad - mature spores. Spores released only when gametophyte dies and decays. ... Archegonium grown at same pace as sporangium, forming a calyptra. Sporogenous tissues forms spore mother cells & spores. Elaters eject spores. IV. Anthocerotae. - Hornworts, Anthoceros A. Gametophytes ...
www.cs.cuc.edu

Fern notes
... a ring of thick-walled cells - the annulus. This aids in spore dissemination. Sporogenous tissue in the sporangium forms spore mother cells which meiotically form spores. Except for two small families of water ...
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Lab VII - The Origin of Seed Plants (3)
... trilete morphology is characteristic of spores produced by meiosis of a zygote or other diploid spore mother cell. Why, then, are we calling these grains pollen? Pollen is generally defined as the ... until a bit later. Some workers have coined the term "prepollen" to refer to plesiomorphic spore morphologies that function as pollen grains. A variety of other ovules are reported from the ...
www.ucmp.berkeley.edu

BI 102 Spring 2003
... (spore making/containing sac). Within a sporangium each spore mother cell (a.k.a. sporocyte) undergoes meiosis producing four haploid spores. Each sporangium may contain from one to hundreds of spore mother cells. Some plants (all bryophytes, many ferns) have only one type of sporangium and thus only one type of spore. Flowering plants, like all ...
una.edu

Mycology - Taxonomy - Ascomycota
... hymenium.The reflexed tip, or crozier, enables mitotic division of the nuclei, delimiting the ascus mother cell in which karyogamy is followed immediately by meiosis. In other words, plasmogamy, karyogamy ... within locules of a stroma, and the stroma may be epigeous or hypogeous during spore release. Spore release is usually by active ejection from apothecia and perithecia. Hypogeous ascocarps are ...
bugs.bio.usyd.edu.au

lilac_care
... usually good success. This method is basically by severing a sucker or offset form the mother plant. This can be done in the spring or fall. One suggestion is to sever ... degree of openness allows a greater airflow through the shrub, thereby reducing the amount of spore inoculation. Warm, moist, environmental conditions favor the development of the fungal spores, so some years ...
lilacs.freeservers.com

Glossary of Pollen and Spore Terminology - Part 5 (S-Z)
... of foot layer. Special wall (Beer, 1911) Pollen mother-cell wall Spheroidal (Erdtman, 1943) Describing the shape of a pollen grain or spore in which the polar axis and the equatorial diameter ... . Sporoderm (Bischoff, 1833) The entire wall of a pollen grain or spore. Sporomorph (Erdtman, 1947) A general term for spore-like palynomorphs. Sporopollenin (Zetsche and Vicari, 1931) The name given to the ...
www.biol.ruu.nl

Glossary of Pollen and Spore Terminology - Part 5 (S-Z)
... of foot layer. Special wall (Beer, 1911) Pollen mother-cell wall Spheroidal (Erdtman, 1943) Describing the shape of a pollen grain or spore in which the polar axis and the equatorial diameter ... . Sporoderm (Bischoff, 1833) The entire wall of a pollen grain or spore. Sporomorph (Erdtman, 1947) A general term for spore-like palynomorphs. Sporopollenin (Zetsche and Vicari, 1931) The name given to the ...
www.biol.ruu.nl More from this site

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