Botany Midterm 1

A review for a Botany

80 cards   |   Total Attempts: 188
  

Cards In This Set

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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