Why do leaves appear green?OA. Because they absorb a large fraction of the green light from the sun.O B. Because chloropyll primarily absorbs green lightOC. Because of the Greenhouse EffectOD. Because they reflect and transmit a large fraction of the green light from the sunQUESTION 25What is the major constituent of plant cell walls as well as the most abundant organic compound on Earth?OA. CelluloseOB. ChlorophylOC. CornOD.RubiscoQUESTION 26What is wood?O A. None of the answers are correctB. Primary growth produced from an apical meristemOC. Primary phloem produced from a primary meristemO D.Secondany xylem produced from a lateral (aka secondary) meristemQUESTION 27What is an example of plant biomass being used for the production of biofuels?OA. Wood burningOB. Corn for ethanol production to be used as a car fuelOc.Wood for home buildingOD.Deforestation in the tropics

A leaf is a flattened blade-like structure attached to the stem of a plant. It is generally green…

Answered: Why do leaves appear green?

Science

Biology

Why do leaves appear green?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter6: Where It Starts-Photosynthesis

Section: Chapter Questions

Problem 1DAA

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WRITE ABOUT A THEME: ENERGY AND MATTER Life issolar powered. Almost all the producers of the biospheredepend on energy from the sun to produce the organicmolecules that supply the energy and carbon skeletonsneeded for life. In a short essay (100–150 words), describehow the process of photosynthesis in the chloroplasts ofplants transforms the energy of sunlight into the chemicalenergy of sugar molecules.
Chlorophyll is green because it absorbs green light lessthan it absorbs light of other wavelengths. The accessory pigmentsin the leaves of deciduous trees tend to be red and yellow, but theircolor is masked by that of the chlorophyll. Suggest a connectionbetween these points and the appearance of fall foliage colors inmany sections of the country.
Energy Efficiency of Biofuel Production Most of the plant material currently used for biofuel production in the United States consists of food cropsmainly corn, soybeans, and sugarcane. In 2006, David Tilman and his colleagues published the results of a 10-year study comparing the net energy output of various biofuels. The researchers grew a mixture of native perennial grasses without irrigation, fertilizer, pesticides, or herbicides, in sandy soil that was so depleted by intensive agriculture that it had been abandoned. They measured the usable energy in biofuels made from the grasses, and also from com and soy, then measured the energy it took to grow and produce biofuel from each kind of crop (FIGURE 6.18). FIGURE 6 .18 Energy inputs and outputs of biofuels made from three different crops. One hectare is about 2 .5 acres. 2. Which of the biofuels tested had the highest ratio of energy output to energy input?
Energy Efficiency of Biofuel Production Most of the plant material currently used for biofuel production in the United States consists of food cropsmainly corn, soybeans, and sugarcane. In 2006, David Tilman and his colleagues published the results of a 10-year study comparing the net energy output of various biofuels. The researchers grew a mixture of native perennial grasses without irrigation, fertilizer, pesticides, or herbicides, in sandy soil that was so depleted by intensive agriculture that it had been abandoned. They measured the usable energy in biofuels made from the grasses, and also from com and soy, then measured the energy it took to grow and produce biofuel from each kind of crop (FIGURE 6.18). FIGURE 6 .18 Energy inputs and outputs of biofuels made from three different crops. One hectare is about 2 .5 acres. 3. Which of the three crops would require the least amount of land to produce a given amount of biofuel energy?
Most of the carbon dioxide that plants use for photosynthesis comes from ________. a. glucose b. the atmosphere c. rainwater d. photolysis
Which of the following statements is incorrect? a. Pigments absorb light of certain wavelengths only. b. Many accessory pigments are multipurpose molecules. c. Chlorophyll a is green because it absorbs green light.
Energy Efficiency of Biofuel Production Most of the plant material currently used for biofuel production consists of food cropsmainly corn, soybeans, and sugarcane. In 2006, David Tilman and his colleagues published the results of a 10-year study comparing the net energy output of various biofuels. The researchers grew a mixture of native perennial grasses without irrigation, fertilizer, pesticides, or herbicides, in sandy soil that was so depleted by intensive agriculture that it had been abandoned. They measured the usable energy in biofuels made from the grasses, and also from com and soy, then measured the energy it look to grow and produce biofuel from each kind of crop (Figure 6.1). FIGURE 6.1 Energy input and output of biofuels made from three different crops. One hectare is about 2.5 acres. Which of the three crops would require the least amount of land to produce a given amount of biofuel energy?
Energy Efficiency of Biofuel Production Most of the plant material currently used for biofuel production consists of food cropsmainly corn, soybeans, and sugarcane. In 2006, David Tilman and his colleagues published the results of a 10-year study comparing the net energy output of various biofuels. The researchers grew a mixture of native perennial grasses without irrigation, fertilizer, pesticides, or herbicides, in sandy soil that was so depleted by intensive agriculture that it had been abandoned. They measured the usable energy in biofuels made from the grasses, and also from com and soy, then measured the energy it look to grow and produce biofuel from each kind of crop (Figure 6.1). FIGURE 6.1 Energy input and output of biofuels made from three different crops. One hectare is about 2.5 acres. Which of the biofuels tested had the highest ratio of energy output to energy input?
Figure 5.7 On a hot, dry day, plants close their stomata to conserve Water. What impact will this have on photosynthesis?
In C3 plants, ______ makes sugar production inefficient when stomata close during the day. a. photosynthesis b. photolysis c. photorespiration d. carbon fixation
Where in plant cells does the Calvin cycle take place? a. thylakoid membrane b. thylakoid space c. stroma d. granum
Plants containing only chlorophyll b are exposed to radiation with the following wavelengths: 10nm (x- rays), 450nm (blue light), 670nm (red light), and 800nm (infrared light). Which plants harness the most energy for photosynthesis? X-ray irradiated plants Blue light irradiated plants Red light irradiated plants Infrared irradiated plants