MT1-Review-plants - Bio 1B Sections 105/106 Review for Midterm#1 Plants Exam content The exam will cover all the lecture material up to and

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Bio 1B Sections 105/106 February 21, 2006 Review for Midterm #1: Plants Evolution of fungi, algae, and plants - Fungi, algae, plants and animals are all eukaryotes (cells with a nucleus). - Fungi are NOT closely related to plants. Plants have cellulose in their cell walls, whereas fungi have chitin , indicating that they are more closely related to animals. - Green algae are the direct ancestors of plants. - Algae are not plants, but protists (a loosely defined group of mostly microscopic eukaryotes) Fungi and their life cycles - Fungi are decomposers , excreting enzymes to break down dead organic matter. - Their bodies are made of up filaments called hyphae . All the hyphae together are called a mycelium . Most of the mycelium is below-ground. - Fungi have a variety of life cycles but do not have alternation of generations. - A common life cycle is as follows: o haploid ( n ) hyphae of different mating types fuse, resulting in a dikaryotic phase (2 haploid nuclei per cell, designated n + n ). o These dikaryotic nuclei fuse to make to make diploid cells (2 n ), and soon undergo meiosis to produce spores ( n ), which disperse and form new haploid hyphae. 1 plants.usda.gov/gallery Exam content The exam will cover all the lecture material up to and including Lecture 9 (secondary growth, Monday Feb. 6). The textbook and lab manual are supplemental and will not be tested directly. (This review handout is not comprehensive, just an outline!) Exam format The test will last for fifty minutes (6:10 – 7:00 p.m.) and contain approximately 33 questions for a total of 99 points (14% of your total grade). All questions will be multiple-choice with one best answer and will be entered on a Scantron. The test is closed-book and closed-notes. Calculators and other devices not allowed - you need only a #2 pencil and your brain! For last-minute questions Attend Dr. Feldman’s review session on Wednesday, 2/22, at 6 pm in 1 Pimentel. Go to GSI office hours in 2013 VLSB: Amber 11-12 W and 12-1 F; Brian TBA. You can also go to any other GSI’s office hours throughout the week. E-mail your GSI: Amber akerr l @ l berkeley.edu or Brian bobbitworm l @ l berkeley.edu . Visit the class webpage for posted questions and answers: http://ist-socrates.berkeley.edu/~akerr/bio1b/questions-plants.html.
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- Fungi are important in human food (e.g. bread, wine) and medicine (e.g. penicillin). - A lichen is a symbiosis between an alga (which provides energy through photosynthesis) and a fungus (which provides structure and takes up nutrients). Algae and their life cycles - Algae have diverse life cycles, sometimes including alternation of generations (algae are thought to have “invented” A of G, and given rise to land plants). -
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This note was uploaded on 04/02/2008 for the course BIO 1B taught by Professor Carlson,mischel,power during the Spring '07 term at University of California, Berkeley.

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MT1-Review-plants - Bio 1B Sections 105/106 Review for Midterm#1 Plants Exam content The exam will cover all the lecture material up to and

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