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BIO 202: Plant Life Cycles
Plant Life Cycles Terminology
20
Biology
Undergraduate 2
03/28/2009

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Term
Haploid
Definition
Possessing only a half complement (1 set) of chromosomes.
Term
Diploid
Definition
Possessing a full complement of 2 sets of chromosomes.
Term
Sporophyte
Definition
Diploid (2n), spore-producing phase
Term
Gametophyte
Definition
Haploid (1n), gamete-producing phase
Term
Sporangium
Definition
Spore-producing structure contained on the sporophyte
Term
Gametangium
Definition
Gamete-producing structure contained on the gametophyte
Term
Antheridium
Definition
Gametangium that produces sperm
Term
Archegonium
Definition
Gametangium that produces eggs
Term
Meiotic sporogenesis
Definition
production of spores via meiosis
Term
mitotis gametogenesis
Definition
production of gametes via mitosis
Term
Syngamy
Definition
The fusion of two gametes. In primitive life-cycles, gametes may not be divided into sperm and egg, but simply gamete 1 and gamete 2
Term
Fertilization
Definition
Fusion of sperm and egg
Term
Zygote:
Definition
diploid cell resulting from the fusion of egg and sperm. Grows into mature sporophyte.
Term
Zoospore
Definition
Motiles pores found in some algal lineages ( as well as oomycetes and some other groups)
Term
hepatophyta
Definition
liverworts, have rhizoids, capsule with elaters
Term
anthoceropyhta
Definition
hornworts
Term
bryophyta
Definition
true mosses
Term
Andreaeopsida
Definition
– Lantern, Granite mosses
Term
Sphagnopsida
Definition
Peat mosses
Term
byropsida
Definition
true mosses
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