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Diversity of the Plant Kingdom
Divisions of Plants
24
Biology
Undergraduate 1
09/19/2009

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Term
reproductive cycle in which both multicellular haploid and diploid phases occur
Definition
alternation of generations
Term
a multicellular photosynthetic organism with cellulose cell walls, a life cycle characterized by alternation of generations, and indeterminate growth
Definition
plant
Term
scientific term for wood, provides structural support
Definition
xylem
Term
means "naked seed"; not enclosed in fruit
Definition
gymnosperm
Term
most successful of the tracheophytes; flowering plants; seed enclosed in fruit
Definition
angiosperm
Term
plant with no vascular tissue, where the gametophyte (haploid) generation is dominant; relies on moist areas for reproduction
Definition
bryophyte
Term
moves water, sugars, and nutrients throughout a plant
Definition
vascular tissue
Term
covers 1% of the earth's surface and lives mostly in bogs, creates peat, can hold 20 times its weight in water, super acidic, Amy's favorite!
Definition
sphagnum moss
Term
largest phyla of bryophytes; lives in diverse habitats
Definition
moss
Term
most primitive of the bryophytes, cells operate independently of each other; grows on soil, rock, and bark; female plant produces umbrella structures that house a non-motile egg
Definition
liverwort
Term
What are the "horns" in hornworts?
Definition
sporophytes
Term
division of plants that have vascular tissue, distinct plant organs (leaves, roots, stems) and specialization of tissues; and a dominant sporophyte generation
Definition
tracheophytes
Term
tracheophyte subdivision in which the embryo of the sporophyte develops on the gametophyte, which provides protection and nutrients
Definition
seedless plants
Term
mostly tropical phyla of seedless plants; super flammable
Definition
club moss
Term
tropical seedless plant phyla with highly reduced leaves that produce spores; stem does most of the photosynthesis
Definition
whisk fern
Term
phyla of seedless plant where the top is a sporophyte; some species branch, some don't; has highly reduced leaves
Definition
horsetail
Term
largest group of seedless plant phyla; has greatest diversity
Definition
ferns
Term
slow-growing, highly toxic phyla of seed plants
Definition
cycad
Term
phyla of seed plants that has a male and female species; very tolerant of pollution and widely distributed, although there used to be more species
Definition
ginkgo
Term
mostly evergreens, high in vitamin C; has highly reduced leaves
Definition
conifer
Term
phyla of seed plants divided into three groups (ephedra, gnetum, and welwitschia)
Definition
gnetophytes
Term
the "pinnacle of plant organisms"; most evolved and most diverse of the plant kingdom
Definition
angiosperm
Term
What purposes does a flower have for angiosperms?
Definition
The flower allows for greater efficiency of reproduction because it attracts polinators that help in the dispersal of seeds
Term
What purpose does fruit have for angiosperms?
Definition
offers nourishment and protection for the plant embryo
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