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38 Cards in this Set
- Front
- Back
Independant Assortment
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each homologous pair acts independantly
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Crossing over
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combining DNA
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Angiosperms
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grek "seed vessel" most successful class of plants; reproduction
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Flower
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reproductive structure varying in size shape and color; from the vegetative (L2) meristems that become reproductive; all parts are modified leaves
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Whorls
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Name of the layers of a flower
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Flower Layers
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sepals, petals, stamens, carpels
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Petels
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2nd whorl; collectively called corolla; attract pollinators; color related to pollinator
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Receptacle
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base of flower where parts are attached
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Sepals
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outer wholr, function protct flower; may shed or curl backwards as flowers open; collectively called calyx
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Tepals
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when the 2 wholrs that make up the caylx and the corolla are indistinguishable
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Androecium
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male reproduction structures
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Gynoecium
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female reproduction structures
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Stamen
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consists of a phlament and anther (male)
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Pistil
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consists of a stigma, style, and an ovary (female)
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Ovary
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contains ovules which develop into seeds
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Style
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elevates stigma to position for pollen collections and conduit for pollen growth
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Stigma
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tip of pistil where pollen adheres
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Epigynous
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flowers have flower parts attached abover the ovary; ovary is INFERIOR
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Perigynous
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flowers have parts that are attached around the ovary; over is SUPERIOR
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Hypogynous
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flowers have parts attached below the ovary; ovary is SUPERIOR
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Complete flowers
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flowers with all four whorls present
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incomplete flowers
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flowers missing one or more whorl
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Perfect flowers
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flowers with both male and female parts present
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Imperfect flowers
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flowers with either male or female parts present
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Staminate flowers
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flowers with only male parts
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carpellate flowers
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flowers with only female parts present
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Monoclinous
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a plant with only perfect flowers
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Monoecious
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a single plant with both stamenate and carpellate flowers
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Dioecious
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a single plant with either stamenate or carpellate flowers
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Polygamo-dioecious
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having male and female flowers on the same plant, but perfect flowers as well
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Polygamo Monoecious
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having male and female flowers on the same plants but perfect flowers as well
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Pollination
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the process of placing the pollen from an anther onto a stigma
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Self pollination
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pollen of flower pollinates stigma of same flower and subsequent fertilization occurs
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Cross pollination
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pollen from one plant pollinates the stigma of a plant of the same species and subsequently fertilizes the egg of a flower on a different plant
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Self- incompatability
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a plant unable to fertilize itself due to phyisical or chemical makeups
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Cleistogamy
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flowers stay coled in certain situation sand self pollinate
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Chasmogagy
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another name for cross pollination
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Hybrid vigor
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occurs where plants form 2 different species/cultivars/genera are crossed
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