: 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.
As in gymnosperms, the male gametophyte is the pollen grain. In order for fertilization to occur in most flowering plants, insects or other animals must transport the pollen to the pistil. A major distinguishing feature of angiosperms is the practice of double fertilization. An angiosperm ovule contains an egg cell and a diploid fusion nucleus, which is created through the joining of two polar nuclei within the ovule.