BIOL 2010 Lecture Notes - Lecture 7: Brazil Nut, Viviparity, Hesperidium
2 Dec 2016
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Document Summary
Gain an appreciation of the flower and fruit structure. Annual plants - cycle completed in single season: cycle = from seed germination to mature plant producing seeds. Biennial plants - cycle completed in two growing seasons. Perennial plants - cycle takes several to many growing seasons. Plant produces flowers on new growth every year, while other plant parts persist indefinitely. Two major classes of flowering plants: monocots, dicots. Monocots are believed to have evolved from primitive dicots. Palms get large thru a primary thickening of cells just below the apical meristem. Flowers begin as embryonic primordium that develops into a bud. Flowers occur as specialized branches at tips of peduncles: may have branchlets of pedicels (stalk of single flower) Receptacle - swollen end of peduncle or pedicel parts of flower attached to receptacle in whorls: sepals, petals, stamens, and pistil. Peduncle used for inflorescences while pedicel is used for a single flower.
