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Unformatted text preview: 1 1 All of the following about the midterm lecture exam are true EXCEPT: It is W e d s , 7 O . . It is a l m u lt. . T h e s e a tin g /ro . . It m a y c o n t a in . . 3% 91% 3% 4% 1. It is Weds, 7Oct from 6:30-7:30pm. 2. It is all multiple choice. 3. The seating/room chart is now posted in MyGrades. 4. It may contain textbook material not presented in lecture. 2 Lecture 8 Plant hormones, reproduction, & response to environment 24 September 2009 BIOL 111 Organismal Biology 3 Are all plants photoautotrophic? Y e s N o 75% 25% 1. Yes 2. No 4 5 The largest nitrogen source is not usable by plants. Bacteria are the key to nitrogen cycling. Legumes have symbiotic relationships with the nitrogen-fixing bacterium, Rhizobium . 6 Some plants live in nitrogen-poor soils & have evolved a unique way to meet their needs. Venus flytrap Sundew http://www.youtube.com/watch?v=ktIGVtKdgwo 2 7 Some plants have evolved a parasitic life style. doddler mistletoe Indian pipe 8 Plants III lecture outline 1. Hormones auxins tropisms 2. Reproduction asexual sexual 3. Response to environment dry habitats wet habitats pathogens & herbivores 9 Hormones are one factor that effect the growth and development of plants....
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- Fall '09