PLSC FINAL 2017

Question 4 1 / 1 point Roses and other flowering plants with net-veined leaves are examples of . monocots None of these gymnosperms dicots Question 5 2 / 2 points water and minerals enter the root leaf epidermal cells minimize water loss water is lost from leaf openings water is transported in the xylem Question 6 1 / 1 point Old World coprolites middens New world Question 7 1 / 1 point true false Question 8 1 / 1 point none of these increase the stability decrease the stabiltiy change the location Question 9 1 / 1 point true false Question 10 1 / 1 point use carrier proteins allow water uptake in the root epidermal cells always require energy from respiration diffusion by osmosis Question 11 1 / 1 point radiant energy chemical energy mechanical energy kinetic energy Question 12 0 / 1 point Two sperm combine with a polar nucleus to form endosperm. One sperm combines with the polar nuclei to form the zygote, and one sperm combines with the egg to form endosperm. One sperm combines with the egg to form the zygote, and one sperm combines with the polar nuclei to form endosperm. Two sperm combine with two eggs to form the zygote and endosperm. Question 13 1 / 1 point Which of these developmental events happens first when a seed germinates? The cotyledons disappear as their stored nutrition is used. The cotyledons appear aboveground, turn green, and photosynthesize. The hypocotyl elongates to lift cotyledons aboveground. The root emerges from the seed to obtain water and nutrients from the soil. Question 14 1 / 1 point tRNA rRNA ribosome mRNA Question 2 / 2 15 points that occur in a species throughout its evolutionary existence that contribute to the next generation of a population of an individual's genotype present in a specific population Question 16 1 / 1 point Eastern United States Peru The Fertile Crescent (Mesopotamia) Mexico Question 17 2 / 2 points thousands; cereals thousands; cassava hundreds, sweet corn hundreds; soybean Question 18 1 / 1 point mycoplasma; mycoplasmacides insects; insecticides fungal; fungicides weeds: herbicides Question 19 2 / 2 points Cola drinks are made with seeds from the kola tree (Cola nitida<i>) found in West Africa. true false Question 20 2 / 2 points Tucson is in which USDA hardiness zone(s) 10 and 11 8 and 9 5 and 6 3 and 4 Question 21 2 / 2 points precipitation temperature light all of these Question 22 2 / 2 points temperate deciduous forest tundra these all receive about the same amount of precipitation tropical Question 23 0 / 1 point Prokaryotic cells ... have organized organelles and a membrane bound nucleus. lack both membrane bound organelles and membrane bound nuclei. may have a membrane bound nucleus but never organized membrane bound organelles. never contain photosynthetic apparatus. Question 24 1 / 1 point Enzymes are described as catalysts, which means that they . are proteins can make an energy requiring reaction energy yielding provide energy for the reactions they facilitate increase the rate of a reaction without being consumed by the reaction Question 25 2 / 2 points garden pea soybean peanut green bean Question 26 1 / 1 point In angiosperm the primary xylem cells are: companion cells vessel elements trachea seive tube members Question 27 2 / 2 points Photosynthesis and respiration have which of the following in common? Both are energy requiring processes. Both use NADPH to store high energy electrons. Both require light In eukaryotes, both processes reside in specialized organelles. Question 28 1 / 1 point What base pairing arrangement is typically found in double-stranded DNA? G pairs with A; T pairs with C. A pairs with U; G pairs with C. There are no base-pairing rules. A pairs with T; G pairs with C. Question 29 2 / 2 points Which of the following features characterize the legume plants? they all belong to one single family, Fabaceae the roots are associated with nitrogen-fixing bacteria All of these are characteristic of legumes. the seeds have two cotyledons Question 30 2 / 2 points life should be impossible energy can neither be created nor destroyed the quality of energy in the universe is constant the quantity of usable energy declines with each energy transformation Question 31 1 / 1 point The study of pollen is called palynology. False True Question 32 1 / 1 point Which hormone is used commercially to ripen green fruit? ethylene brassinosteroid auxin gibberellin Question 1 / 1 33 point What is genetic recombination? the new combination of maternal and paternal chromosome segments that result when homologs cross over the combination of a prominent haploid phase and a prominent diploid phase in a life cycle the new combinations of chromosome segments that result when outcrossing occurs the new combination of maternal and paternal homologs that results when chromosome separate at meiosis I Question 34 1 / 1 point The process of crop domestication depends on natural selection. False True Question 35 2 / 2 points The cytoplasm contains plasma membrane organelles and cytosol cell wall protoplasts Question 36 1 / 1 point Which of the following statements about plant cells is most accurate? Plant cells generally have more genes than animal cells All of the above are true statements about plant cells. Plant cells have between 20,000 and 40,000 genes per cell Plant cells contain a full complement of organelles and cytoplasm and may undergo mutation during mitosis. Question 37 1 / 1 point Which of the following options best describes the phloem? rigid, unliving, conducting tissue Living tissue with seive tube members and companion cells. Living tissue with tracheid cells Dead cells with companion cells for carbohydrate transport Question 38 1 / 1 point ground xylem dermal vascular Question 39 1 / 1 point Translocation is the process whereby water vapor is expelled from the leaf. True False Question 40 2 / 2 points The ultimate source of energy to support most life on Earth is . cellular respiration fossil fuels hydroelectric sunlight Question 41 2 / 2 points Keeping the seed hydrated before germination Dispersing seed Deterring predators Attracting pollinators Question 42 0 / 2 points False True Question 43 2 / 2 points After double fertilization in angiosperms, what development sequence is correct? The ovule becomes the seed. The entire carpel dries up and falls off the plant The embryo in the seed develops into endosperm. The ovary wall becomes the endosperm. Question 44 2 / 2 points willow trees cocoa plants asparagus plants poppies Question 45 2 / 2 points true false Question 46 0 / 2 points true false Question 47 2 / 2 points Which of the following options below best describe Kingdom Protista? single and multicellular, eukaryotic organisms made up of prokaryotic cells single cell organisms that lack ability to do photosynthesis. None of these Question 48 0 / 2 points a niche a population an ecosystem a community Question 49 2 / 2 points Grasslands generally . are found in continent interiors have less rain than the desert biome are dominated by freezing temperatures have much more rain than the chaparral biome Question 50 1 / 1 point Annual growth rings are the result of one year of secondary xylem Question 51 True False 1 / 1 point Eukaryotic cells are found in all multicellular organisms in kingdom plantae, fungi and animalia. lack DNA. are only found in kingdom plantae. are found in kingdom eubacteria. Question 52 1 / 1 point Erosion reduces the top soil available for agricultural land causes accumulation of salinity in agricultural land increases when contour strip cropping is employed. occurs as a result of natural processes only Question 53 1 / 1 point Stolons are succulent stems modified for water storage horizontal stems modified to facilitate plant distribution underground storage roots above ground stems thickened for storage Question 54 1 / 1 point Thorns are modified leaves specialized stem for carbohydrate storage modified stems arise from epidermal cells Question 55 1 / 1 point It decreases, because water exits and affects turgor pressure. It increases, because water enters and affects turgor pressure. It decreases, because sugar concentration directly affects turgor pressure. There is no change; sugar concentration has no effect on turgor pressure. Question 56 1 / 1 point Cacti spines result from a modification of the same plant organ that produces leaves tubers trichomes rhizomes Question 57 2 / 2 points Which of the following members of the plant kingdom evolved more recently? Angiosperms. Gymnosperms. Cycads. Bryophytes. Question 58 1 / 1 point the synthesis reactions the synthesis of ATP the oxidation of glucose the photo reactions Question 59 1 / 1 point What color in the absorption spectrum do chlorophyll a and b absorb least? white blue red green Question 60 1 / 1 point Their pollen is dispersed by wind. Early spring birds are probably the pollinators. Their insect pollinators are probably color blind. Flower color or shape is not related to pollinators. Question 61 2 / 2 points endosperm nutrients are absorbed into the cotyledons endosperm replaces cotyledons in the seed same thing is true; there is a substantial amount of endosperm endosperm never even starts to form after double fertilization Question 1 / 1 62 point 800 1200 1800 400 Question 63 2 / 2 points segregation and independent assortment mutation and fertilization crossing over and independent assortment of chromosomes crossing over and allelic exclusion Question 64 2 / 2 points Mexico, 5,500 India; 5,500 Fertile Crescent, 17,000 China; 11,500 Question 65 1 / 1 point Cassava is a minor crop of importance only to people in Asia. False True Question 66 1 / 1 point The centromere are found in both living and non-living things acts as a spindle to pull the replicated strands of DNA to either side of the cell during mitosis is unrelated to chromosomes joins the sister chromatids in the middle during the S phase of the cell cycle Question 67 2 / 2 points biotic…..abiotic abiotic….biotic Question 68 1 / 1 point Pepper, from the berries of Piper nigrum, produces the chemical capsaicin. false true Question 69 1 / 1 point Which of the following is found in BOTH animal and plant cells? Chloroplasts Vacuoles Mitochondria Lysosomes Question 70 0 / 1 point In the cell cycle, both G1 and G2 phases have growth occur have DNA replication occur occur during mitosis onlly occur before the mitotic phase Question 71 1 / 1 point Which of the following is NOT one of the three steps that bring about plant cell growth? Cell differentiation (specialization) Meristem cell division (mitosis and cytokinesis Meiosis Cell elongation Question 72 2 / 2 points Bark is made of crushed secondary phloem and periderm Question 73 True False 1 / 1 point False True Question 74 1 / 1 point Which of the following statements about energy is TRUE? All molecules have the same energy content. Energy is created when a molecule is oxidized. ADP has more energy than ATP. Living things require a constant supply of energy. Question 75 1 / 1 point The oxygen produced during photosynthesis is derived from . carbon dioxide water glucose ATP Question 76 1 / 1 point does not require oxygen takes place in the presence of oxygen prevents aerobic respiration takes place in the photo reactions Question 77 1 / 1 point ATP and NADH to synthesize glucose NADH to glucose light to chemical energy in glucose glucose to ATP Question 78 0 / 2 points the population the individual genotype