BIOL 2P93 Study Guide - Final Guide: Austrobaileyales, Archaefructus, Cabombaceae
21 Sep 2017
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If either is missing it is imperfect & depending what part is present, it is said to be staminate or carpellate/pistillate. If both staminate & carpellate flowers are found on the same plant it is said to be monoecious. & 2 synergid cells: cell wall formation begins on other 3 nuclei (antipodal cells, embryo sac is now formed (mature megagametophyte)- 8 nuclei & 7 cells. Angiosperm life cycle (chronological perspective): flowers: anthers produce the microspores, ovules produce the megaspores, microspores undergo mitosis forming 2 cell immature pollen grain, generative cell divides & produces 2 sperm mature pollen grain. Trimeniaceae: about 100 species of trees/shrubs/liana live in tropical areas and low light, plants often use animals/insects to aid in reproduction- animals act as pollinators & flowers. Flavonoids contribute to yellow, scarlet, red, red-purple, violet, purple & blue flower colours: anthocyanins- make up most of red & blue pigments, flavonols- common in leaves & flowers.
