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structure consisting of a few haploid cells surrounded by a thick protective wall that contains a male gametophyte of a seed plant
structure of a seed plant sporophyte in which a female spore forms and then develops into a female gametophyte that contains an egg; structure in the ovary of a pistil that develops into a seed
transportation of pollen grains from a male reproductive structure of a flower to a female reproductive structure of a flower
structure that grows from a pollen grain to an ovule, enabling a sperm to pass directly to an egg
leaflike structure of a plant embryo; functions in the transfer of stored nutrients to the embryo, in which food is stored
reproductive structure that produces eggs; in flowering plants, that lower part of a pistil that produces eggs in ovules; in animals, the gamete-producing organ of the female reproductive system
process by which two sperm fuse with cells of the female gametophyte, producing both a diploid (2n) zygote and a triploid (3n) endosperm
type of reproduction in which new plants grow from vegetative parts such as roots, stems, and leaves
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