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Chapter 22 Vocabulary
Vocabulary
27
Biology
9th Grade
04/14/2011

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Term
alternation of generations
Definition
alternation of sporophyte and gametophyte
Term
sporophyte
Definition
multicellular diploid phase
all genes
Term
gametophyte
Definition
mutlicellular halpoid phase
male and female part but half genes needed
Term
bryophytes
Definition
group of plants that mosses belong to
Term
vascular tissue
Definition
specialized tissue which contains tubes hardened with a substance called lignin
Term
archegonia
Definition
where eggs are produced
Term
antheridia
Definition
where sperm are produced
Term
sporangium
Definition
spore capsule
Term
tracheophytes
Definition
vascular plants
Term
tracheids
Definition
hollow tubelike cells with thick cell walls strengthened by lignin
Term
xylem
Definition
carries water
Term
phloem
Definition
carries food
Term
seed
Definition
a plant embryo and a food supply, encased in a protective covering
Term
gymnosperms
Definition
bear their seeds directly on the scales of cones
Term
angiosperms
Definition
flowering plants
Term
pollen grain
Definition
tiny structure that contains the entire male gametophyte
Term
pollination
Definition
the transfer of pollen from the male reproductive structure to the female reproductive structure
Term
seed coat
Definition
surrounds and protects the embryo and keeps the contents of the seed from drying out
Term
ovules
Definition
the structures in which the female gametophytes develop
Term
pollen tube
Definition
structure containing two haploid sperm nuclei
Term
ovaries
Definition
surround and protect flowering seed
Term
fruit
Definition
a structure containing one or more matured ovaries
Term
cotyledons
Definition
in embryos
Term
monocots
Definition
one seed leaf
Term
dicots
Definition
two seed leaves
Term
woody plants
Definition
made primarily of cells with thick cell walls that support the plant body
Term
herbaceous plants
Definition
plant stems that are smooth and nonwoody are characteristics of..
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