Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 36, Problem 2TYK
Summary Introduction
Introduction:
The nutrient concentration is low in the soil surrounding the plant roots. The nutrients are imported into the plants against the concentration gradient by pumping of protons to the extracellular space for transport process to occur.
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a. How do stem being cut underwater affect the speed of absorption of water?
b. Why do wilted plants are slow when it comes to absorption of water?
Approximately 10 percent of water within the atmosphere has been released by plants by transpiration. Which is the best method for measuring the transpiration rate within an individual plant?
A. Measure osmotic pressure within the guard cells to determine amount of time stomata are open.
B. Weigh the plant before and after a 24 hour period while accounting for evaporation from the soil.
C. Access the abiotic conditions and how the plant has adapted to its native environment.
D. Measure water loss by placing a plastic bag over a stem of the plant and subtracting the amount of water released into the bag from the amount of water within the soil.
Compare the energy needs of a plant for the movement of water in the xylem according to the cohesion-tension model to the movement of phloem sap according to the pressure-flow model?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is the function of xylem vessels? A. composed of dead lignified cells connected end to end B. allows the transport of water and minerals in the upward direction C. carries the products of photosynthesis in a bidirectional movement D. composed of sieve tubes that are closely associated with companion cells to facilitate movement of materialsarrow_forwardWhich statement is true regarding plants and soil nutrition? a. Potassium is a critical mineral for plants because it is a component of ATP b. Soil plays an important role in filtering pollutants c. only macronutrients are essential for plant growth d. stunting is yellowing of tissue due to mineral difficiency e. Organic matter is the least abundant component of soilarrow_forwardAccording to the pressure-flow model, sugar is actively transported into phloem anda. enters xylem, where it is moved toward the leaves due to transpiration.b. creates pressure to move water toward the roots.c. is transported out of the leaves through stomata.d. water follows by osmosis, providing pressure that moves the water and sugar through the phloem.arrow_forward
- The ability of a sunflower plant to become taller is directly due to its a. apical meristem. c. mesophyll cells. b. lateral meristems. d. taproot system.arrow_forwardCompare and contrast the forces that move phloem sapand xylem sap over long distances.arrow_forwardThe xylem in plants are responsible for:(a) transport of water(b) transport of food(c) transport of amino acids(d) transport of oxygenarrow_forward
- Explain the movement of organic nutrients in a plant according to the pressure-flow model of phloem transport.arrow_forwardWhich statement(s) is/are false? * A. A water potential lower than that of the soil draws water into the roots and a water potential lower than that of the stem draws water into the leaf. B. A water potential lower than that of the soil draws water into the roots and a water potential higher than that of the stem draws water into the leaf. C. Water potential and solute concentration increases from the roots to the top of the plant. D. Water enters the plant through the root hairs and exits through the lenticels and stomates. E. A and D F. B and Carrow_forwardThe ability of a sunflower plant to become taller is directly due to itsa. apical meristem. c. mesophyll cells.b. lateral meristems. d. petiole.arrow_forward
- To explain the increase in mass of the light-grown plants, identify one inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass.arrow_forwardList four adaptations of roots that enhance the uptake ofnutrients from the soil.arrow_forwardWhich of the following would tend to increase transpiration?(A) spiny leaves(B) sunken stomata(C) a thicker cuticle(D) higher stomatal densityarrow_forward
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