LBBBION FINAL

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Last updated 6:38 AM on 8/11/25
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118 Terms

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Androecium
The male reproductive part of a flower.
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Gynoecium
The female reproductive part of a flower.
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Flower
The reproductive organ of the plant.
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Perianth
The collective term for the petals and sepals of a flower.
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Stamen
The male part of a flower, consisting of an anther and filament.
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Pistil (Carpel)
The female part of a flower, consisting of the ovary, style, and stigma.
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Petal (Corolla)
The colorful part of a flower that attracts pollinators.
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Sepals (Calyx)
The outer parts of a flower that protect the developing bud.
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Solitary Flower
A flower that grows alone on a stem.
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Inflorescence Flower
A cluster of flowers arranged on a stem.
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Peduncle
The main stem that supports an inflorescence.
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Pedicel
The stalk of a single flower in an inflorescence.
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Bracteole
A small leaf-like structure associated with a flower or inflorescence.
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Bract
A modified leaf that is often associated with a flower or inflorescence.
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Cincinnus
A type of inflorescence with flowers arranged in a spiral.
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Bostryx/Scorpioid Cyme
A type of inflorescence where flowers develop from the tip of the stem.
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Drepanium
A type of inflorescence characterized by a curved shape.
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Rhipidium
A type of inflorescence with flowers arranged on one side.
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Raceme
An inflorescence with flowers attached by short stalks along a central stem.
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Spike
An inflorescence with flowers attached directly to the central stem.
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Ament/Catkin
A type of inflorescence that is typically elongated and drooping.
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Spadix
A fleshy spike of flowers surrounded by a leaf-like bract.
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Complete Flower
A flower with all whorls present (male and female parts, complete perianth).
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Incomplete Flower
A flower with the absence of at least one whorl.
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Perfect Flower
A flower that has both male and female structures present.
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Imperfect Flower
A flower that has either male or female structures, but not both.
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Monoecious
A plant that has both male and female reproductive structures.
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Dioecious
A plant that has distinct male or female individuals.
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Radial Symmetry
can be divided in to 2 equal halves along any medial cut through central axis.
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Bilateral Symmetry
divided in to 2 equal halves only by a medial cut.
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Ovary Superior

stamens, petals and sepals arise from a level BELOW the base of the ovary.

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Ovary Inferior

stamens, petals and sepals arise from a level that is ABOVE the base of the ovary.

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Epigynous
the ovary is situated below the other floral parts.
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Epiperigynous
the ovary is surrounded by other floral parts.
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Free Petals
(Apopetalous) petals that are not fused together.
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Fused Petals
(Gamopetalous) petals that are fused together.
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Apetalous
lacking petals.
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Single Flower
a flower that is not part of an inflorescence.
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Inflorescence
a group or cluster of flowers.
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Pistil
the female reproductive part of a flower.
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Ovary Wall
the outer layer of the ovary.
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Placenta
the tissue within the ovary that connects the ovules.
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Locule
a chamber within the ovary.
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Ovule
the structure that develops into a seed after fertilization.
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Funiculus
the stalk that attaches the ovule to the placenta.
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Embryo Sac
the female gametophyte within the ovule.
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Integument
the outer layer of the ovule.
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Nucellus
the central part of the ovule.
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Micropyle
the opening in the ovule through which the pollen tube enters.
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Megasporocyte
a cell that undergoes meiosis to form megaspores.
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Fruits
Develop from the ovary of the flower after the fertilization of egg.
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Ovary
The part of the flower that develops into fruit.
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Seeds
Develop from ovules after fertilization.
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Fruit
A mature, ripened ovary that contains the seeds.
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Exocarp
The outer layer of the fruit.
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Mesocarp
The middle layer of the fruit.
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Endocarp
The inner layer of the fruit.
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Simple Fruit
Fruit that develops from a single ovary of one flower.
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Aggregate Fruit
Fruit that develops from one flower with many ovaries.
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Multiple Fruit
Fruit that develops from several flowers of an inflorescence crowded together on one stem.
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Fleshy Fruit
Fruit with a succulent pericarp at maturity.
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Dry Fruit
Fruit with a dry pericarp at maturity.
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Dehiscent Fruit
Fruit that splits open along definite seams at maturity.
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Indehiscent Fruit
Fruit that does not open along definite seams at maturity.
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Berry
A pulpy fruit throughout with soft fruit walls.
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Hesperidium
Fruit with inner pulp juice sacs or vesicles enclosed in a leathery rind.
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Pepo
Fruit with a thick pericarp and hard rind.
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Drupe
One-seeded fruit with a distinctly divided pericarp.
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Pome
Fleshy fruit that develops from the receptacle of the flower, often called an accessory fruit.
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Follicle
Fruit that develops from a single ripened ovary and splits once to release seeds.
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Legume/Pod
Fruit that splits open along two lines of dehiscence following maturation and drying.
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Capsule
Fruit composed of more than one carpel that separates, leaving a persistent wall between them.
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Silique
Fruit of two fused carpels that separate.
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Samara
A type of dry fruit that has wings.
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Caryopsis/Grain
A type of dry fruit where the seed is fused with the pericarp.
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Achene
A small, dry fruit that contains a single seed.
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Nut
A hard-shelled fruit containing a single seed.
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Dry Indehiscent Fruits
Fruits that do not split open at maturity.
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Caryopsis or Grain
One seeded fruit where the coat is completely fused to the inner surface of the pericarp.
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Placentation
The arrangement and attachment of ovules inside the ovary.
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Marginal Placentation
Ovules are attached to a placenta on one side of the ovary.
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Free-central Placentation
Ovules are attached to a central axis of a uniloculate ovary.
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Parietal Placentation
Ovules are found along the walls of a uniloculate ovary.
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Axile Placentation
Only one elongated placenta is found in the center of the ovary.
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Basal Placentation
The placenta is at the base (bottom) of the ovary.
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Dispersal by Wind
Mechanism of seed dispersal where seeds are carried away by the wind.
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Dispersal by Water
Mechanism of seed dispersal where seeds are carried away by water.
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Dispersal by Animals
Mechanism of seed dispersal where seeds are spread by animals.
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Dispersal by Explosion (Ballistic)
Fruits that explode when dry, throwing seeds several distances from the main plant.
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Dry Fruits
Fruits with a dry pericarp at maturity.
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Fleshy Fruits
Fruits that are succulent (tender, juicy, tasty).
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Parts of a Seed
The various components that make up a seed, including the seed coat, micropyle, hilum, cotyledon, embryo, epicotyl, and hypocotyl.
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Endospermic seeds
Seeds that contain endosperm, which provides nourishment to the developing seedling.
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Exendospermic seeds
Seeds that do not contain endosperm.
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Seed Coat
The outer protective layer of a seed that safeguards the internal parts.
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Aleurone
A layer rich in protein and composed of living cells, found in seeds.
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Endosperm
The tissue that provides nourishment to the developing seedling, composed of starch and not alive.
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Scutellum/Cotyledon
The first leaf of monocot plants, which is a large shielded cotyledon.
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Coleoptile
A sheath that protects the emerging shoot as it pushes up through the soil.
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Plumule
The growing point for the first shoots and leaves of a plant.