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9.2 Transport in the phloem of plants
Description
| Nature of science: Developments in scientific research follow improvements in apparatus—experimental methods for measuring phloem transport rates using aphid stylets and radioactively-labelled carbon dioxide were only possible when radioisotopes became available. (1.8) |
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Understandings:
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Utilization: Syllabus and cross-curricular links: Biology Topic 1.4 Membrane transport |
Directly related questions
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17N.2.HL.TZ0.08b:
Plants have widespread influences, from food chains to climate change.
Explain the process of water uptake and transport by plants.
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17N.2.HL.TZ0.08b:
Plants have widespread influences, from food chains to climate change.
Explain the process of water uptake and transport by plants.
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17N.2.HL.TZ0.b:
Plants have widespread influences, from food chains to climate change.
Explain the process of water uptake and transport by plants.
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18M.2.HL.TZ1.7c:
Explain how organic compounds are transported within plants.
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18M.2.HL.TZ1.7c:
Explain how organic compounds are transported within plants.
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18M.2.HL.TZ1.c:
Explain how organic compounds are transported within plants.
- 18M.2.HL.TZ2.5c: Outline the process used to load organic compounds into phloem sieve tubes.
- 18M.2.HL.TZ2.5c: Outline the process used to load organic compounds into phloem sieve tubes.
- 18M.2.HL.TZ2.c: Outline the process used to load organic compounds into phloem sieve tubes.
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22N.2.HL.TZ0.7c:
Explain how carbohydrates are transported from plant leaves.
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22N.2.HL.TZ0.7c:
Explain how carbohydrates are transported from plant leaves.
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22N.2.HL.TZ0.c:
Explain how carbohydrates are transported from plant leaves.
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17N.1.HL.TZ0.33:
Which letter identifies phloem?
[Source: E R DEGGINGER/Getty Images]
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17N.1.HL.TZ0.33:
Which letter identifies phloem?
[Source: E R DEGGINGER/Getty Images]
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18M.1.HL.TZ1.33:
In a plant, what tissue(s) is/are specially adapted to transport sucrose?
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18M.1.HL.TZ1.33:
In a plant, what tissue(s) is/are specially adapted to transport sucrose?
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18M.1.HL.TZ2.29:
The micrograph shows the cross-section of the vascular tissue in a dicotyledonous root. Which letter identifies phloem sieve tubes?
[Source: Wendy Paul]
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18M.1.HL.TZ2.29:
The micrograph shows the cross-section of the vascular tissue in a dicotyledonous root. Which letter identifies phloem sieve tubes?
[Source: Wendy Paul]
- 18N.3.HL.TZ0.2c: Describe the distribution of vascular tissues in the stem of dicotyledonous plants.
- 18N.3.HL.TZ0.c: Describe the distribution of vascular tissues in the stem of dicotyledonous plants.
- 18N.3.HL.TZ0.2c: Describe the distribution of vascular tissues in the stem of dicotyledonous plants.
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19M.1.HL.TZ1.33:
The image shows part of a section through the stem of a non-woody plant.
[Source: © Ross Koning. Image used with the kind permission of the author. http://plantphys.info.]
Which feature distinguishes the transport of materials in the tissue labelled I from that in the tissue labelled II?
A. In II, active transport is used.
B. In II, products of photosynthesis are transported.
C. In I, movement of materials is the result of transpiration.
D. In I, there is a higher solute concentration.
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19M.1.HL.TZ1.33:
The image shows part of a section through the stem of a non-woody plant.
[Source: © Ross Koning. Image used with the kind permission of the author. http://plantphys.info.]
Which feature distinguishes the transport of materials in the tissue labelled I from that in the tissue labelled II?
A. In II, active transport is used.
B. In II, products of photosynthesis are transported.
C. In I, movement of materials is the result of transpiration.
D. In I, there is a higher solute concentration.
- 19M.1.HL.TZ2.40: What could be used in a technique for measuring flow rates in phloem? I. Potometers II. Aphid...
- 19M.1.HL.TZ2.40: What could be used in a technique for measuring flow rates in phloem? I. Potometers II. Aphid...
- 19M.2.HL.TZ1.4a: Xylem and phloem contain structures that are adapted for transport. Outline the differences...
- 19M.2.HL.TZ1.4a: Xylem and phloem contain structures that are adapted for transport. Outline the differences...
- 19M.2.HL.TZ1.a: Xylem and phloem contain structures that are adapted for transport. Outline the differences...
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21M.1.HL.TZ2.33:
The image shows part of a section through the stem of a non-woody plant. Where does transport of sucrose occur?
[Source: Courtesy of Kelly Cude, PhD, Professor Biological Sciences, College of the Canyons.]
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21M.1.HL.TZ2.33:
The image shows part of a section through the stem of a non-woody plant. Where does transport of sucrose occur?
[Source: Courtesy of Kelly Cude, PhD, Professor Biological Sciences, College of the Canyons.]
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21N.2.HL.TZ0.7b:
Distinguish between the xylem and phloem of plants.
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21N.2.HL.TZ0.7b:
Distinguish between the xylem and phloem of plants.
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21N.2.HL.TZ0.b:
Distinguish between the xylem and phloem of plants.
- 22M.1.HL.TZ2.32: The diagram shows the longitudinal section of phloem tissue at a plant source. What is a...
- 22M.1.HL.TZ2.32: The diagram shows the longitudinal section of phloem tissue at a plant source. What is a...
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23M.1.HL.TZ2.28:
The stem of a young plant is cut through and the cut end is immersed in water containing a red dye. The plant continues to transpire as normal. In what region of the stem would the red colour be visible soon after immersion?
[Source: Berkshire Community College Bioscience Image Library, 2014. Herbaceous Dicot Stem: Vascular Bundles Young
Helianthus. [image online] Available at: https://www.flickr.com/photos/146824358@N03/36834307513 [Accessed
4 October 2021]. Public domain.] -
23M.1.HL.TZ2.28:
The stem of a young plant is cut through and the cut end is immersed in water containing a red dye. The plant continues to transpire as normal. In what region of the stem would the red colour be visible soon after immersion?
[Source: Berkshire Community College Bioscience Image Library, 2014. Herbaceous Dicot Stem: Vascular Bundles Young
Helianthus. [image online] Available at: https://www.flickr.com/photos/146824358@N03/36834307513 [Accessed
4 October 2021]. Public domain.] - 23M.1.HL.TZ2.29: What is a benefit of having xylem vessels close to phloem sieve tubes in plants? A. Sugars can...
- 23M.1.HL.TZ2.29: What is a benefit of having xylem vessels close to phloem sieve tubes in plants? A. Sugars can...
- 23M.1.HL.TZ2.38: Where is the greatest quantity of water reabsorbed from the nephron? A. Bowman’s capsule B. ...
- 23M.1.HL.TZ2.38: Where is the greatest quantity of water reabsorbed from the nephron? A. Bowman’s capsule B. ...