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8.16 Mrs Jensen
Plant Reproduction
13
Science
8th Grade
12/29/2011

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Term
gametophyte stage
Definition
plant life cycle stage in which all plant structures are made of cells with a haploid number of chromosomes
Term
sporophyte stage
Definition
plant life-cycle stage in which all plant structures are made of cells with a diploid number of chromosomes
Term
alternation of generations
Definition
occurs when a plant's life cycle alternates between sex-cell-producing stage and a spore-producing stage
Term
rhizome
Definition
underground stem of a fern, from which fronds and roots grow
Term
frond
Definition
leaf of a fern that grows from a rhizome
Term
sori
Definition
spore-producing structures on the undersides of fern fronds
Term
prothallus
Definition
fern gametophyte, which can make its own food, absorb water and nutrients, and has both male and female reproductive structures
Term
ovule
Definition
in a seed plant, the structure that contains an egg cell, food-storage tissue, and a sticky fluid
Term
pollen grains
Definition
produced by the male reproductive organs of seed plants
Term
stamen
Definition
male reproductive organ inside the flower of an angiosperm that consists of a filament and an anther
Term
pistil
Definition
female reproductive organ inside the flower of an angiosperm
Term
ovary
Definition
the swollen base of the pistil where ovules are formed in angiosperms
Term
pollination
Definition
transfer of pollen grains from the stamen to the stigma
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