Radience

Plant Reproduction and Diversity

Science

alternation of generation

a life cycle where generations alternate between haploid (n) and diploid (2n)
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anther

the pollen-producing structure of a flower’s stamen
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auxin

a plant hormone that that stimulates cell elongation
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carpel

the ovary, style, and stigma in flowering plants, it produces female gametophytes
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cytokinin

a plant hormone that stimulates cell division to grow roots, fruits, and branches
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dormancy

a period where an organism is alive but inactive and does not grow
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double fertilization

fertilization in angiosperms, which produces a diploid zygote and triploid endosperm
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endosperm

food-rich tissue that nourishes an angiosperm embryo as it grows
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ethylene

a gaseous plant hormone that ripens fruit
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gibberellin

a plant hormone that stimulates cell growth
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gravitropism

the growth of plants caused by gravity, stems grow upwards and roots grow downwards
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hormone

a chemical produced in the body that affects the development of target cells
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long day plant

a plant that flowers when the days are long (over 12-14 hours of light)
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ovary flower

the lower part of a pistil that produces seeds in ovules
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petal

colored leaf-like part of a flower
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photoperiodism

a plant’s response to changes in the length of day and night
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phototropism

the growth of a plant towards a light source
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pistil

the female reproductive organ of a flower
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seed coat

the tough protective tissue around a plant embryo that keeps it from drying out
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sepal

a leaf like structure below the petals, it protects the flower when it is a bud
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short day plant

a plant that requires more than 12 hours of darkness to flower
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stamen

the male reproductive part of a flower
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thigmotropism

the response of a plant when it touches an object, like a vine coiling around a pole
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tropism

a change in a plant’s growth in response to external factors, like growing towards the light
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