The Sonnet / Italian Poetry. The Petrarchan Sonnet, also called the Italian Sonnet is one of the two dominant sonnet forms, the other being the English or Shakespearean sonnet.Both have weathered the corruption of time. The Petrarchan Sonnet came on the heels of the first sonnet form, the Sicilian Sonnet which is rarely seen in today's literature.The more popular Italian or Petrarchan Sonnet built on the Sicilian form and converted the original alternating rhyme in the octave to an envelope rhyme.he Petrarchan Sonnet, also called the Italian Sonnet is one of the two dominant sonnet forms, the other being the English or Shakespearean sonnet. Both have weathered the corruption of time.
Auxins are hormones involved in plant-cell elongation, apical dominance, and rooting. A well known natural auxin is indoleacetic acid, or IAA which is produced in the apical meristem of the shoot. Developing seeds produce IAA, which stimulates the development of a fleshy fruit.hemotropism is a plant growth response to a chemical. After a flower is pollinated, a pollen tube grows down through the stigma and style and enters the ovule through the micropyle. The growth of the pollen tube in response to chemicals produced by the ovule is an excellent example of chemotropism.
Plants, unlike animals, lack glands that produce and secrete hormones. Instead, each cell is capable of producing hormones. Plant hormones shape the plant, affecting seed growth, time of flowering, the sex of flowers, senescence of leaves, and fruits.They affect which tissues grow upward and which grow downward, leaf formation and stem growth, fruit development and ripening, plant longevity, and even plant death.he word hormone is derived from Greek, meaning set in motion. Plant hormones affect gene expression and transcription levels, cellular division, and growth. They are naturally produced within plants, though very similar chemicals are produced by fungi and bacteria that can also affect plant growth.