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Science Vocab
Science Vocab
13
Science
7th Grade
12/06/2010

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Term
gametophyte
Definition

plant life cycle stage that beginswhen cells in reproductive

organs undergo meiosis and produce haploid cells

Term
saporophyte
Definition
plant life cycle stage that begins when an egg is fertilized by a sperm
Term
frond
Definition
leaf of a fern that grows from the rhizome
Term
rhizome
Definition

underground stem of a fern

Term
sori
Definition
fern structures in which spores are produced
Term
prothallus
Definition
small, green, heart-shaped gametophyte plant form of a fern that cam make its own food and asorb water and nutrients from the soil
Term
pollen grain
Definition
small structure produced by the male reproductive organs of a seed plant; has a water-resistant coat, can develop from a spore, and contains gametophyte parts that will produce sperm
Term
pollination
Definition
transfer of pollen grains to the female part of a seed plant by agents such as gravity, water, wind, and animals
Term
ovule
Definition
in gymnosperms, the female reproductive part that produces eggs and food-storage tissues
Term
stamen
Definition
male repoductive organ inside the flower of an angiosperm; consists of an anther, where pollen grains form and a filament
Term
pistil
Definition
female reproductive organ inside the flower of an angiosperm; consists of an ovary and a sticky stigma, where pollen grains land
Term
ovary
Definition
female reproductive organ that produces eggs and is located in the lower part of the body
Term
germination
Definition
series of events that results in the growth of a plant from a seed
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