BIOL 2004 Lecture Notes - Lecture 9: Achene, Germination, Epicotyl
Document Summary
Pollen tube growth: if the pollen lands on the stigma of the same plant, there will be programmed cell death of the pollen tube, self-incompatibility, avacado flowers: have both male and female. Female opens for a day, next day the male parts open for a day while the females are closed. Pollination methods: gymnosperms: moslty wind pollinated, angiosperms: various pollination vectors. Water: any aquatic species: trends in flower traits. Beetle: white flowers, various odor, no nectar guides, large open round flowers, many parts, flowers parts are chewed, nectar often absent ex: magnolia. Uv patterns present, mild pleasant odor, nectar guides present , pollen or nectar reward, landing platform, cupshape or irregular shape. Moths: whilte or pale colour, strong sweet odor, no nectar guides, nectar reward, open at night, no landing platform, regular shape: easter lily, paperwhites, tobacco. Butterfly: orange, yellow, reds, pleasant odor, tubular, with a landing grip, ex: milkweed.
