Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 26, Problem 18RQ
Plants are a source of
- food
- fuel
- medicine
- all of the above
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Which one of the following statements is INCORRECT?
A bacteria and fungi help plants to return minerals to the soil
Plant depends on animals for food and shelter.
Animals need plants as a source of food
Plant relies on animals to help them scatter their seeds.
Plants receive their nutrients mainly from ?
atmosphere
chlorophyll
light
soil
Primary consumers _____.
receive energy directly from the sun
make their own food using photosynthesis
break down dead matter into chemical nutrients
are the first to receive energy from a plant
Chapter 26 Solutions
Biology 2e
Ch. 26 - Figure 26.8 At what stage dees the diploid zygote...Ch. 26 - Figure 26.15 If a flower lacked a megasporangium,...Ch. 26 - Seed plants are. all homosporous mostly...Ch. 26 - Besides the seed, what ether major structure...Ch. 26 - In which of the following geological periods would...Ch. 26 - Which of the following structures widens the...Ch. 26 - Which of the following traits characterizes gym...Ch. 26 - Megasporocytes will eventually produce which of...Ch. 26 - What is the ploidy of the following structures...Ch. 26 - In the northern forests of Siberia, a tall tree is...
Ch. 26 - Which of the following structures in a flower is...Ch. 26 - Pollen grains develop in which structure? the...Ch. 26 - In the course of double fertilization, one sperm...Ch. 26 - Corn develops from a seedling with a single...Ch. 26 - Which of the following plant structures is not a...Ch. 26 - White and sweet-smelling flowers with abundant...Ch. 26 - Abundant and powdery pollen produced by small,...Ch. 26 - Plants are a source of food fuel medicine all of...Ch. 26 - The Triassic Period was marked by the increase in...Ch. 26 - What role did the adaptations of seed and pollen...Ch. 26 - The Mediterranean landscape along the sea shore is...Ch. 26 - What are the four modern-day phyla of gymnosperms?Ch. 26 - Some cycads are considered endangered species and...Ch. 26 - What are the two structures that allow angiosperms...Ch. 26 - Biosynthesis of nectar and nutrient-rich pollen is...Ch. 26 - What is biodiversity and why is it important to an...
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- Most of the carbon that land plants use for photosynthesis comes from ______. a. glucose b. the atmosphere c. water d. soilarrow_forwardMost of the carbon that land plants use for photosynthesis comes from ________. a. sugars c. water b. the atmosphere d. soilarrow_forwardPlants use__________ as an energy source to drive photosynthesis. a. sunlight b. hydrogen ions c. O2 d. CO2arrow_forward
- Pollination is an example of_____________ a possible source of new drugs chemical diversity an ecosystem service crop pest controlarrow_forwardThe _______do not have xylem or phloem. a. mosses b. ferns c. monocots d. conifersarrow_forwardEnergy 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?arrow_forward
- 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?arrow_forwardSieve tubes are part of ___________. a. cortex c. phloem b. mesophyll d. xylemarrow_forwardFigure 21.6 The Svalbard seed vault is located on Spitsbergen island in Norway, which has an arctic climate. Why might an arctic climate be good for seed Storage?arrow_forward
- Plants are a source of ________. a. food b. fuel c. medicine d. all of the abovearrow_forwardWhere can we find medicinal plants? A) Everywhere. B) Back yard. C) Mountain tops. D) Oceans.arrow_forwardMost plants grow in soil. They take in sunlight and carbon dioxide through their leaves and nutrients through the roots HYDROPONICS is a method of growing plants without sore plants are placed in water instead of sore even without saw they still growarrow_forward
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