angiosperm

flowering plants, dominates most terrestrial ecosystems with more than 30,000 species. flowers and fruits.

sepals, petals, carpels, stamens

structures of flowers

sepals

in flowers, usually photosynthetic organs. located at base of peduncle

petals

located inside sepals, display colors to attract pollinators

gynoecium

female reproductive organ, located at the innermost part of the flower where eggs form. contains stigma, style, and ovary.

androecium

male reproductive region of flower, contains multiple stamens

stigma

where wind or pollinating arthropod deposit pollen

style

where pollen tubes grow to reach the ovary

ovary

produces ovules that develop into a seed, located in gynoecium.

stamens

part of the male reproductive organ, consists of filaments (thin stalk) and anther (sac-like structures). Filaments elevate the anther to a position where it can effectively release pollen, and the anther produces and releases pollen grains which contain male gametes necessary for fertilization.

endosperm

tissue that serves as a food reserve for the developing embryo

cotyledons

conduits to transmit the broken-down food reserves from their storage site inside the seed to the developing embryo

perfect flowers

when each flower carries stamens and carpels