: a sonnet consisting of an octave rhyming abba abba and a sestet rhyming in any of various patterns (as cde cde or cdc dcd) âcalled also Petrarchan sonnet.ADVERTISEMENT.efinition of ITALIAN SONNET. : a sonnet consisting of an octave rhyming abba abba and a sestet rhyming in any of various patterns (as cde cde or cdc dcd) âcalled also Petrarchan sonnet. ADVERTISEMENT. bee in one's bonnet.
Stamens. A stamen is the general term for the male reproductive part of an angiosperm. Most flowers posses several of these upright structures, which consist of two main sections. The filament, or stalk, of the stamen stands vertical inside the flower petals.
The reproductive structures of angiosperms are formed in specialized and oftenshowy organs called flowers. In contrast to gymnosperms that produce seedsexposed in cones, angiosperms form seeds in an enclosed structure, the ripenedovary or fruit located in the center of the flower.The derivation of angiosperm meansseed in a box or case and is from the Greek words angio meaning box, case, orvessel and sperm meaning seed.ithin the embryo sac, onesperm combines with the egg nucleus to form a zygote and the second spermcombines with two other nuclei, called polar or endosperm nuclei, to form a fertilizedendosperm nucleus that divides mitotically to form endosperm (the nutritive tissue ofangiosperm seeds).