32. What is the original source of almost all the energy in most ecosystems? CarbohydratesSunlightWatercarbon
43. An organism that uses energy to produce its own food supply from organic compounds is called a(an)HeterotrophConsumerDetritivoreAutotroph
54. Corn planted in a field that has been previously planted with legumes and then plowed under is likely to beLess productive because legumes remove phosphorus from the soil.More productive because bacteria living on the roots of legumes fix nitrogen in the soil.More productive because nitrogen fixing bacteria help to keep away pests.Less productive because the legumes have already taken all the nitrogen, carbon and phosphorus from the soil.
65. The repeated movement of water between the Earth’s surface and the atmosphere is called The water cycleThe condensation cyclePrecipitationevaporation
76. Which of the following is not recycled in the biosphere. WaterNitrogenCarbonEnergy
87. What is the process by which bacteria convert nitrogen gas in the air to ammonia? Nitrogen fixationExcretionDecompositionDenitrification
98. Carbon cycles through the biosphere in all of the following processes except PhotosynthesisTranspirationBurning fossil fuelsDecomposition of plants and animals
109. Which of the following has a direct role in the nitrogen cycle? BacteriaLegumesDecomposersAll of the above
1110. Energy is released from ATP when A phosphate group is addedAdenine bonds to riboseATP is exposed to sunlightA phosphate group is removed
1211. A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27⁰C. The gas being collected is probablyOxygenCarbon dioxideATPVaporized water
1312. Photosynthesis uses sunlight to convert water and carbon dioxide into OxygenHigh energy sugars and starchesATP and oxygenOxygen and high energy sugars and starches
1413. Plants gather the sun’s energy with light-absorbing molecules called PigmentsThylakoidsChloroplastsGlucose
1514. Most plants appear green because chlorophyll Does not absorb green lightReflects violet lightAbsorbs green lightNone of the above
1615. A granum is aStack of chloroplastsStack of thylakoidsMembrane enclosing a thylakoidPhotosynthetic pigments molecule
1716. The stroma is the region outside the ThylakoidsChloroplastsPlant cellsAll of the above
1817. Where in the chloroplast is chlorophyll found? In the stromaIn the thylakoidIn the ATPIn the glucose
1918. Where do the light-dependent reactions take place? In the stromaIn the mitochondriaWithin the thylakoid membranesOnly in the chlorophyll molecules
2019. What are the produces of the light-dependent reactions? Oxygen gasATPNADPHAll of the above
2120. Which of the following is not a step in the light-dependent reactions? High energy electrons move through the electron transport chain.Pigments in the thylakoid absorb light.AT synthase allows H+ ions to pass through the thylakoid membrane.ATP and NADPH are used to produce high energy sugars.
2221. Why does the inside of the thylakoid membrane become positively charged during the light-dependent reactions?H+ ions are released as water splits.ATP synthase allows H+ ions to pass through the membraneATP synthase produces ATP from ADP.Carbon dioxide builds up in the stroma.
2322. The Calvin Cycle is another name for light-independent reactionsLight-dependent reactions.PhotosynthesisAll of the above
2423. What is a product of the Calvin cycle? Oxygen gasATPHigh-energy sugarsCarbon dioxide gas
2524. How does the Calvin cycle differ from the light-dependent reactions? It takes place in the stromaIt takes place in chloroplastsIt requires lightIt takes place in the thylakoid
2625. If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars?More sugars will be producedNo sugars will be producedThe same number of sugars will be produced by without carbon dioxideCarbon dioxide does not affect the production of high-energy sugars in plants.
2726. Which of the following affects the rate of photosynthesis? WaterTemperatureLight intensityAll of the above
2827. Which of the following is not a characteristic of all plants? All are eukaryoticAll have cell wallsAll produce seedsAll are multicellular
2928. Without plants,Animals could not live on land.There would be no green algae in the oceans.Animals could not undergo cellular respiration.There would be not carbon dioxide in the atmosphere.
3029. Of all the following locations, you would be most likely to find mosses growing in Hot, dry mineral-poor soilSandy soil near a beach.Low, shaded ground near a small pond.High, exposed ground with direct sun.
3130. Xylem tissue is important to ferns because it Can conduct water over long distancesAllow water to diffuse into the rootsCarries carbohydrates to all parts of the plantAllows ferns to reproduce in dry environments.
3231. Which of the following includes a plant embryo, a food supply and a protective covering? Pollen grainSporeSeedgametophyte
3332. The responses of plants to external stimuli are called TropismsAuxinsGibberillinsCytokinins
3433. The growth patterns of ivy tendrils that wrap around objects is an example of GravitropismPhototropismThigmotropismPhotoperiodism
3534.The brilliant colors of leaves in the fall are a result of New synthesis of orange and yellow pigments in the leaves.The movement of chlorophyll from the stems to the leaves.The stopping of chlorophyll synthesis, making the carotenes (orange) and the xanthophyll (yellow) pigments visible.The decrease of auxins in the meristems and the increase of phytochrome in the leaves.
3635. Plants are classified based on which of the following characteristics? Color and shapeType of pigments and photosynthesis stages it goes throughType and time of growthVascular tissue and type of seed production
3736. Which of the following is a way that humans are disrupting the important nutrient cycles? PollutionCombustion of fossil fuelsOverpopulationAll of the above
3837. Which of the following is a correct match up to the element and its function in the plant? Potassium – cell wallsPhosphorus – ATPSulfur – cell membranesNitrogen – stoma opening