Front | Back |
Systematics
|
Scientific study of the kinds and diversity of organisms and of the relationshps between them
|
Taxon
|
General term for any one of the taxonomic categories, such as species, class, order, or phylum
|
Autotroph
|
An organism that is able to synthesize the nutritive substances it requires from inorganic substances in it's environment
|
Heterotroph:
|
An organism that cannot manufacture organic compounds and so must feed on organic materials that have originated in other plants and animals
|
Prokaryote
|
A cell lacking a membrane-bounded nucleus and membrane-bounded organelles; Bacteria and Archea
|
Eukaryote
|
A cell that has a membrane-bounded nucleus, membrane-bounded organelles, and chromosomes in which the DNA is associated with proteins; an organism composed of such cells. Plants, animals, fungi, and protists are the 4 kingdoms of Eukaryotes
|
Cytokinesis
|
Dvision of cytoplasm of a cell following nuclear division
|
Plasmodesma
|
The minute cytoplasmic threads that extend through openings in cell walls and connect the protoplasts of adjacent living cells
|
Gamete
|
A haploid reproductive cell; gametes fuse in pairs forming zygotes which are diploid
|
Meiospore
|
Spores that arise through meiosis and are therefore haploid
|
Zygote
|
The diploid cell resulting from the fusion of male and female gametes
|
Sporophyte
|
The spore-producing, diploid phase in a lifecycle characterized by alternation of generations
|
Gametophyte
|
In plants that have an alternation of generations, the haploid, gamete produciong generation
|
Plasmogamy
|
Union of the protoplasts of gametes that is not accompanied by union of their nuclei
|
Karyogamy
|
The union of two nuclei following fertilization, or plasmogamy
|