Midterm Fall 2005

Midterm Fall 2005 - TROPICAL ECOLOGY EEBiol 151A MIDTERM...

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1 TROPICAL ECOLOGY EEBiol 151A MIDTERM Fall 2005 Prof. Arthur C. Gibson INSTRUCTIONS: PRINT your name clearly on the Scantron 885 form. Mark the correct answer with a #2 pencil as you answer each question. Be sure that the question number corresponds to the number on the Scantron form. If you do not understand a question, ask now, but please do not ask for a definition or explanation of a technical term. Be sure to answer all questions, because there is no penalty for guessing. Turn in the Scantron form; keep the exam questions. The answer key for the exam will be posted on the course website after we have graded the exam today and the scores are posted on myUCLA. MULTIPLE CHOICE. Items 1 50 on the Scantron form. 2.7 points each. Notice that some of the questions are written in a negative format. The responses of each question are listed in alphabetical order. Select the one best answer for each. 1. Fungus-growing ants occur: (a) globally; (b) in regions throughout the New World (Americas); (c) in Southeast Asia to as far west as Iran; (d) only in Brazil; (e) only in African rain forests. 2. What makes bamboos such interesting plants of the tropics?: (a) A shoot has very hard stems with solid nodes and long, hollow internodes; (b) It is the only plant group that forms rhizomes; (c) Species produce flowers and fruits nearly every month of the year, and so they are important food plants of animals, especially monkeys and birds; (d) The stems are protected in the wild from graffiti by being covered with long, hard spines that cause instant death to the would-be graffiti artist; (e) They have some of the largest leaves on earth. 3. What term applies to any tropical tree that is leafless during the dry season?: (a) annular; (b) deciduous; (c) epiphytic; (d) herbaceous; (e) lianaceous. 4. This term is used for a tropical tree formation of Brazilian Amazon that is totally flooded with fresh water during up to six months of the year: (a) elfin forest; (b) gallery forest; (c) mangrove forest; (d) monsoon forest, (e) várzea.
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2 5. Termites: (a) are generally all female colonies except during mating season; (b) are more abundant in temperate than in tropical forests because temperate forests have nearly twice as much leaf litter per year; (c) are most closely related to and evolved from social cockroaches; (d) are white because their bodies lose color when exposed to bright sunlight; (e) have stomach (gut) acids capable of digesting both cellulose and lignin, hence eat wood as their principal food. 6. During nitrogen fixation of legumes: (a) a bacterial colony become established in root cells, where dinitrogen gas (N N) is stepwise converted into ammonia (NH 3 ) by reacting with hydrogen; (b) a type of fungus is able to convert dinitrogen gas (N N) in air into nitrous oxide (NO); (c) carbon dioxide is combined with dinitrogen gas (N N) to yield cyanide compounds in soft tissues of the plant’s roots; (d) dinitrogen gas (N N) enters leaves through stomates to be manufactured by the leaf
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This note was uploaded on 04/12/2011 for the course EEB 151A taught by Professor Gibson during the Winter '11 term at UCLA.

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Midterm Fall 2005 - TROPICAL ECOLOGY EEBiol 151A MIDTERM...

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