Biology
- The Cell Cycle
What are all of the stages to the Cell Cycle? The Cell Cycle starts with its first stage called Interphase. The cell will be in this stage the longest amount of time out of all of the stages of the cycle. During the first part of Interphase is called...
- #32 Summary Of Cell And Nuclear Division
1. Growth of a multicellular organism is a result of parent cells dividing to produce genetically identical daughter cells. 2. During cell division the nucleus divides first, followed by division of the whole cell. 3. Division of a nucleus to produce...
- Some Living Descriptions
Protista- unicellular eukaryotes, some multicelled formscell sturcture simple to very complexsome heterotrophs- protozoanssome autotrophs- algaeasexual repro, some both sexual, asexualmotile, non-motile, sizes- most microscopic but some may be 100m in...
- Phase
Term: phaseLiterally meaning: ?stage?Origin: Anc Greek ?????/phasis(=stage) > ?????/phasko(=imperfect tense of verb ??????/phemi(=appear, show, manifest, aver)Coined/HistoryDefinition1. (biology) Phase is defined as the stage in a process eg of development...
- Spore
Term: sporeLiterally meaning: " seed?Origin: Anc Greek??????(=seed) > (=sow,) >??????/spearo (=disperse) Coined/Historythe name of the classical Greek city ??????/Sparta is derived also from word ??????(=disperse) due to many villages around of...
Biology
sporophyte
Term: sporophyte
Origin: Anc Greek
??????(=seed) > (=sow,)
????/phyto(=plant) > ???/phyo(=germinate)
literally means "spore-bearing»
note: the name of the classical Greek city ??????/Sparta is derived also from word ??????/spearo (=disperse) due to many villages around of Sparta
Originally German biologist and botanist Wilhelm Hofmeister (1824-1877) demonstrate the two phases in the life cycle of mosses and liverworts in 1851. Few years later in 1868 Czech botanist Ladislav Josef ?elakovský (1834 ?1902) coined the terms gametophyte and sporophyte
Definition:
The sporophyte is a the asexual phase of the life cycle of a plant and some algae that exhibits a double set of chromosomes. In the sporophyte phase, a diploid plant body grows and eventually produces spores through meiosis. The first cell in a sporophyte generation is the diploid zygote, while the first cell in the gametophyte stage (the sexual phase of life cycle) is the haploid spore.
Coined:
- The Cell Cycle
What are all of the stages to the Cell Cycle? The Cell Cycle starts with its first stage called Interphase. The cell will be in this stage the longest amount of time out of all of the stages of the cycle. During the first part of Interphase is called...
- #32 Summary Of Cell And Nuclear Division
1. Growth of a multicellular organism is a result of parent cells dividing to produce genetically identical daughter cells. 2. During cell division the nucleus divides first, followed by division of the whole cell. 3. Division of a nucleus to produce...
- Some Living Descriptions
Protista- unicellular eukaryotes, some multicelled formscell sturcture simple to very complexsome heterotrophs- protozoanssome autotrophs- algaeasexual repro, some both sexual, asexualmotile, non-motile, sizes- most microscopic but some may be 100m in...
- Phase
Term: phaseLiterally meaning: ?stage?Origin: Anc Greek ?????/phasis(=stage) > ?????/phasko(=imperfect tense of verb ??????/phemi(=appear, show, manifest, aver)Coined/HistoryDefinition1. (biology) Phase is defined as the stage in a process eg of development...
- Spore
Term: sporeLiterally meaning: " seed?Origin: Anc Greek??????(=seed) > (=sow,) >??????/spearo (=disperse) Coined/Historythe name of the classical Greek city ??????/Sparta is derived also from word ??????(=disperse) due to many villages around of...