BIS002B MT1 W10 Key Schwartz

BIS002B MT1 W10 Key - Midterm l BIS 2B Winter 2010 L True False uestions TWO POINTS EACH TOTAL 20 POINTS Fill in the answer on the scantron usin A

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Unformatted text preview: Midterm l BIS 2B Winter 2010 L True False uestions TWO POINTS EACH' TOTAL: 20 POINTS Fill in the answer on the scantron usin A for True and B for False. In order for an answer to be true, ALL parts of the statement must be true. 1. True (A) / False (B Adaptations can increase an organism’s fitness, whereas acclimation can not. 2./ False (B). California is in a Mediterranean climatic region. It is one of 5 such regions in the world. Each is a biodiversity hotspot. 3. True (A) f @139 An initial capture resulted in 10 marked individuals. Days later, a recapture in the same population then caught 50 individuals; 5 of which were marked. Based on these numbers, the population size is estimated to be 500 individuals. 4-. f@. Phenotypic plasticity refers to genetic diversity of an in "I" I u al that is expressed differently in d1fferent habitats. --E:i+kn 5. True (A) / aIse . The pattern of decreasing biological diversity at decreasing arr 'udes is demonstrated in both terrestrial and marine biotas- 6. True (A) f. The Theory of Island Biogeography states that island species tend toward gigantism and flightlessness in birds owing to a lack of predators. 7. True (A) f The InterTropical Convergence Zone is a region of dry sinking air centered over 30 degrees north and south of the equator. 8. True (A / False (B). r—selected species include many insects as well as many p ants species that exhibit a Type 3 survivorship curve. 9. / False (B). Each of the following is an example of a plant life history tr " ~off: allocation to the production of roots vs shoots in a vascular plant; producing seeds vs producing heavily provisioned seeds; maximizing photosynthetic capacity vs photosynthetic structures that minimize water loss. 10/ False (B). A biome is a large ecological unit (occupying large geographical spaces), is defined by its climate and is described by its dominant vegetation. Midterm l BIS 2B Winter 2010 MULTIPLE CHOICE UESTIONS 3 POINTS EACH‘ TOTAL: 45 PTS. . Mark the letter of the one 1 correct answer on our SCANTRON form usin a #2 encil. Also remember to circle our choice on the exam sheet. 1 1. Which order of biomes correctly follows a decreasing gradient (wetter to drier) of mean annual precipitation, assuming precipitation to be both moderate and equivalent (boreal forest is also known as coniferous forest or T alga in information presented to you): ropical rainforest, temperate deciduous forest, grassland . boreal forest, grassland, temperate deciduous forest c. tundra, grassland, savanna. d- tropical dry forest, temperate deciduous forest, tropical rainforest e. tropical rainforest, grassland, savanna 12. Which statement does not describe a problem with morphological species. a. Individuals share no recent common ancestry, yet have undergone convergent evolution to appear similar. ndividuals are subject to strong natural selection such that in different locations they both appear morphologically different and function as separate species by virtue of reproductive isolation. c. Individuals show significant genetic differentiation without accompanying morphological variation, such as the eastern and 'western meadowlark. ‘ ’ ' d. Individuals show environmentally driven morphological differences in phenotypes that have no genetic basis. 13. The following diagram shows a mountain with a sea breeze blowing as indicated by the arrow. You might think of this as the Sierra Nevada. Which region [a—e) is likely the driest? West East 14. Which term refers to how an animal cats and not what an animal eats? a. carnivore h omnivore c. herbivore redator e. detritivore Midterm l BIS ZB Winter 2010 15. W I 'ch of the following is NOT associated with a k-selected life history? 'ype IlI survivorship curve a long life span c] Iteroparity ' (1) Little parental care for offspring e) Succeeds in stable environments 16. A growing population would add the maximum number of new individuals per time step at what point on the following graph? Population size Time —D- 17. Which of the following traits does not match the mechanism by which it reduces the probability of predation? EL Burrowing ——————————————————————————— *"Pdetection hard turtle shell —————————————————— ——Pdetecti0n Fish schooling / herding behavior ————Pcapture d) A pronghorn’s speed and agility ————— -—Pcapture e) Bright coloration in a sea slug ~~~~~~~~ "—Pconsumpfion 18. The rate of population growth of a densi inde endent o ulation can be predicted with this minimal set of variables [answers with extra variables are wrong answers). ._ a. r, N, K c. r,K d. r 19. Demographers place the majority of countries within the following continents in which order in terms of how far they have progressed through demographic transition: a. Africa > South America > Asia b- North America > Asia > Europe c. Europe > Africa > South America orth America > South America > Africa Midterm l BIS ZB ' Winter 2010 20. Population biologists would NOT agree with which statement a) Open populations experience B, D, I and E b Metapopulations are collections of interacting populations @Clones are genets of one another Simple logistic population growth models are closed to I and E 21- Which statement correctly reflects the distribution of known biological diversity. a. Diversity is maximized in northern latitudes, where the majority of land masses are found. 13. Most species are plants. There are far more plants than vertebrates, but arthropods dwarf ant diversity. d. There are roughly equal numbers of vertebrates and invertebrates. 22. Which factors have been shown to predict progress on demographic transition (choose the most complete and accurate a per class discussion). a. Education for women, b. Contraception availability c. Decreasing poverty a, b and c 23. It has been noted that desert herbs often have open morphologies, whereas alpine herbs are often compact and close to the ground. A leading explanation for these different morphologies is: a. These morphologies reflect trade-Offs relative to C02, with an excess (alpine environments) and a shortage (desert environments) driving morphology. b- These morphologies reflect trade—offs relative to temperature needs for h gain (alpine) and heat loss (desert). c. These morphologies represent trade—offs with respect to reproductive effort and seed diSpersal. d. Both a and b 6. All three, a, b and c. 24. The term that describes provisioned larvae that swim freely in the pelagic environment, but do not feed until the settle and metamorph into an adult form is: a. Planktotrophic b. Semelparous c. Myrmechory ecithotrophic 25. Biodiversity can be defined at many different levels. Variation among individuals 0 e sam species is refe I ed to as: é fl henotypic plasti enotypic diversity Species diversity . Functional group diversity e. Phylogenetic diversity. ameefficg (ROI—Pkw- 5 Midterm 1 B18 2B Winter 2010 SHORT ANSWER (35 POINTS TOTAL). Use PEN (no grade corrections for pencil]. 26. You sample three study plots for their diversity of herbaceous plants. The following table summarizes the results (6 points]: Species Plot A Plot B Plot C Spl 5 2 O Sp2 6 2 O Sp3 6 O O Sp4 7 3 O Sp5 1 O 3 2 1 Sp6 10 2 20 Sp? 10 13 19 Sp8 l 1 1 5 1 8 Sp9 15 20 22 Sp 1 O 20 4O 0 Each plot sampled 100 individuals. Which plot has greatest species richness, which plot has the greatest evenness and which plot is likely to contain the greatest diversity [H’). There is no need to calculate H’ to complete this answer. A short space is provide to allow you to explain your answers. ‘ a. Species Richness. Highest Lowest Plot_ > Plot Q > Plot L b. Evenness Highest Lowe Plot; > PlotfiL > PlotE C. Diversity Highest Lowest Plot“ > Plot L > Plot C_ M 27. You are conducting a mark-recapture study. You mark a total of 80 squirrels. You are trapping them with live traps baited with nuts. You come back later and capture 50 squirrels. An amazing 40 of them have been previously marked. How large do you estimate this population to be? Now, you keep trapping and marking and are disappointed to learn that there are several squirrels that you get every single time in your traps. Is this a problem, and what does it likely meantfi'" original estimate (too large, too small, doesn't matter)? (4 points) # 3P size: @2— Circle one: too large w. 0 : 90,90 Nimzmo 4... .- W“; 9g} 51:01 3W 3.,“ at“. Midterm 1 BIS 2B Winter 2010 28. (Use a pencil to start, then ink it, please), On the graph below, depict growth in 3 populations. These populations will differ in No, r, and K. In Line A (Solid) depict exponential growth with no density dependence. Please start this population with a very low population size. In Line B (Dashed), depict a population begins with more individuals than Line A, has a lower r, but shows density dependent growth. Line “C” t either previous lines, has a lower oints). (dotted) begins with a larger population value of r and a smaller carrying capacity. {6 32M 5 N Time 29. Give three assumptions of a simple mark —- recapture study. (6 points). a. flDfl" (Au 5,49jfijfi") b- ewe“. tum“ mm flag/dubs (fwd -4r~;r/a'v ,.» (may Ev) a. Mutts “#444? C. No {hie—Vitglfietjg Ham-wt. GM Aid-e; /L-./v—’4[V fiéc Midterm 1 K ng BIS 2B Winter 2010 30. Two populations are described in the life tables below. A) For each, give the age class that has the highest contribution to net reproductive rate R0 B) What is the net contribution to reproductive rate in that age class? C. Finally, describe the kind of survivorship curve described by these data. (6 points). Population A Population B Population A Population B 5 a... 4 LL} A. Age class. $2.33 I _ 1 B. Age class contribution: ,3 5- W C. Survivorship curve: Wig: ’7]?- r 7?.— 31. What are the key elements of the Biological Species Concept and how does it differ from the Morphological Species Concept (7 mints.) 65 C. M firlzi ’ é 0:3!!wa Ji- 01 3’”? urban. (-5 fifj‘Chi‘lfi-IE v H K “k. M TLAJif-t‘f :lr‘DLQFJ‘ 1.ilr‘ {Mr-E, M d” 6" d1‘15" ‘{ 4.1a aim-Han as ,LD remm... “,le A mam HWW‘; 5,0665% let $1 raga Bonus Question. ANSWER ON THIS SHEET. NOT the scantron. (2 pts) 32. Which statement about fungal nutfition is not true? a. Some fungi are active predators. b. Some fungi form mutualistic associations with other organisms. c. All fungi require mineral nutrients. @cultative fungi can only grow on their specific hosts. ...
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This note was uploaded on 10/22/2010 for the course BIS 2B taught by Professor Strong during the Winter '08 term at UC Davis.

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BIS002B MT1 W10 Key - Midterm l BIS 2B Winter 2010 L True False uestions TWO POINTS EACH TOTAL 20 POINTS Fill in the answer on the scantron usin A

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