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Unformatted text preview: ovulate cones • heterosporous tree • sexual reproduction • megaspore mother cell • male: small pollen cones • ovule becomes seed consisting of embryo, food supply, and seed coat • pollen grain • enters micropyle and germinates, forming pollen tube that digests through megasporang ium • 2 sperm cells develop and unite with female gametophyte Angiosperms • sexual reproduction in flower • male: stamen; filament: stalk; anther: pollen produced • female: carpel; stigma: receives pollen; style: leads to ovary; ovary: contains 1 or more ovules • fruit-mature ovary • embryo and food in seed • seed contains embryo, endosperm, remnants of sporangium, and seed coat • pollen- two sperm • tube cell produces pollen tube • pollination occurs • sperm nuclei discharged in each ovule...
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