2005 Midterm II

2005 Midterm II - Midterm 2 Lecture Exam BISC 120 Fall 2005...

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Midterm 2 Lecture Exam – BISC 120 – Fall 2005 (Bakus/Wetzer) Your name: ______________________________ Your TAs name: _______________ A. Multiple Choice (5 points each). Select the most appropriate answer and write the letter in the accompanying box. 1. Only about 10% to 20% efficiency occurs in the transfer of energy from one trophic level to another. This great loss of energy is the result of: a) transpiration b) respiration c) fecal production d) two of the above e) all of the above 2. The growth of plants towards light is: a) apoptosis b) abscission c) caused by the production of phytochrome d) cell reduction by auxins e) phototrophism 3. Essential macronutrients for land plants include: a) zinc b) copper c) phosphorus d) silver e) none of the above 4. The bacteria involved in nitrogen fixation are found in: a) shoots b) tubers c) leaves d) bulbs e) roots 5. Which of the following is characteristic of estuary ecosystems? a) high diversity b) seagrass c) upwelling d) corals e) squid Total points this page: _______ page 1 of 8
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Midterm 2 Lecture Exam – BISC 120 – Fall 2005 (Bakus/Wetzer) Your name: ______________________________ Your TAs name: _______________ 6. Which of the following is characteristic of tundra ecosystems? a) fungi b) chaparral c) maple trees d) low growing vegetation e) epiphytes 7. The raising and lowering of leaves or the closing and opening of flowers during approximately every 24 hours is known as: a) an elicitor b) gravitropism c) a circadian rhythm d) defense against parasites e) none of the above 8. The proton pump in plant cells: a) is a type of passive transport b) is the result of evapotranspiration c) results in guttation d) provides energy for solute transport e) is a sugar sink 9. Which of the following is not a major characteristic of freshwater ecosystems? a) abundant wildlife b) excellent water filtration system c) abundant production of organic detritus d) nursery grounds for many animals e) none of the above 10. Double fertilization in angiosperms gives rise to the: a) endosperm b) stigma c) pollen grain d) micropyle e) radicle 11. Plant biomass = 100 grams. If there are 3 trophic levels above plants and the trophic transfer efficiency = 20%, the top carnivores will receive how many grams? a) 6 b) 0.2 c) 4 d) 0.8 e) none of the above Total points this page: _______ page 2 of 8
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Midterm 2 Lecture Exam – BISC 120 – Fall 2005 (Bakus/Wetzer) Your name: ______________________________ Your TAs name: _______________ 12. About 90% water loss by plants occurs by? a)leakage from the root system b) passage through the cuticle c) openings between guard cells d) water dropping off spines and leaves in the morning e) none of the above 13. Hybrid plants can be created by: a) imbibition b) fragmentation c) protoplast fusion d) apomixes e) none of the above 14. An allele is _____. a) 
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2005 Midterm II - Midterm 2 Lecture Exam BISC 120 Fall 2005...

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