DP Biology Questionbank
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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16N.2.HL.TZ0.7a:
Describe the transport of organic compounds in vascular plants.
- 16N.3.HL.TZ0.3a: Describe briefly how scientists obtained leaf phloem sap from the potato plants.
- 17M.1.SL.TZ1.1: Which structure found in eukaryotes has a single membrane? A. Nucleus B. Lysosome C....
- 17M.2.HL.TZ1.4c.i: Vascular plants can be found in a wide variety of ecosystems. Outline active transport in phloem...
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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.1.HL.TZ0.33:
Which letter identifies phloem?
[Source: E R DEGGINGER/Getty Images]
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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.
- 22M.1.HL.TZ2.32: The diagram shows the longitudinal section of phloem tissue at a plant source. What is a...
- 18N.3.HL.TZ0.2c: Describe the distribution of vascular tissues in the stem of dicotyledonous plants.
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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.TZ1.33:
In a plant, what tissue(s) is/are specially adapted to transport sucrose?
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18M.2.HL.TZ1.7c:
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.
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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.2.HL.TZ1.4a: Xylem and phloem contain structures that are adapted for transport. Outline the differences...
