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tiny particles (male gametophytes) produced by seed plants that contain the cells that later become sperm cells
A structure that develops within the ovary of a seed plant and contains the female gametophyte.
transfer of pollen from the male reproductive structure to the female reproductive structure
brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower
A plant that flowers when the nights are longer than the plant's critical night length.
A plant that flowers when the nights are shorter than the nights are shorter than the plant's critical night length
critical night length
the number of hours of darkness that determines whether or not a plant will flower
A plant with a flowering cycle that is not sensitive to periods of light and dark.
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