Module 9: Plant Reproductive Structures Flashcards
is the reproductive organ of a plant
flower
as the sexual organ, provides ways to ensure the pollination and
fertilization of the egg.
flower
results in the embryonic plant
fertilization
stores food for the
embryonic plant and becomes the seed
ovule
matures and becomes the fruit
ovary
This nutrient reserve or food may
be stored outside the embryo as ________ (like in corn) or be absorbed by the
developing embryo into large fleshy _______ (like the bean).
endosperm, cotyledon
two types of seeds
endospermous or albuminous seed and the exendospermous or exalbuminous seed.
are modified leaves that encase the rest of the developing flower. These may be either green and leaflike or composed of petal-like tissue.
Sepals (collective term: calyx)
are modified leaves that serve to
attract pollinators.
Petals (collective term: corolla)
consist of sac-like anthers and filaments
Stamen and Pollen (collective term: androecium)
which are stalks that support
the anthers
filaments
consist of two sacs, each of which contains two
microsporangia.
anthers
Meiosis occurs in microspore mother cells
microsporangia,
each microspore mother cell produces
micropores
Each microspore becomes
becomes a pollen grain or microgametophyte
is composed
of carpels, which fuse to form the case of ovules
pistil
collective term for pistils and carpel
gynoecium
The three regions
of the pistil are
ovary, style, and stigma
where the
ovules are found.
ovary
In each ___, meiosis occurs in a megaspore
mother cell producing four megaspores
ovule
In each ovule, meiosis occurs in a megaspore
mother cell producing four megaspores. Three of these disintegrate,
leaving a functional megaspore, which divides mitotically to produce
an __________
embryo sac or megagametophyte.
The ovary is divided into chambers
locules
is the stalk atop the ovary that elevates into a stigma
style
pattern of ovule attachment and distribution in an ovary is called
placentation
