Q25:
AS & A Level Biology - 9700 Paper 1 2012 Summer Zone 2
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Topic: CH7 - TRANSPORT IN PLANTS
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CH7 - TRANSPORT IN PLANTS
Which row correctly identifies sinks for sucrose transported by mass flow in plants? [Table_1]
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The diagram shows a transverse section through a transport tissue in a plant.Which row correctly identifies cell 1 and cell 2?
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The electron micrograph shows a longitudinal section of part of the stem of a plant. What is the name of the structure labelled X?
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Which statement correctly describes the movement of solutes in the symplast pathway?
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Which substance makes xylem vessel walls impermeable to water?
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Which statement helps to explain why water molecules are forced to move through xylem vessel elements as a consequence of transpiration?
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Which statement correctly identifies the movement of sucrose and amino acids in plant vascular tissue?
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Xylem vessel elements are specialised cells that are adapted for the transport of water.Which statement correctly matches an adaptation of a xylem ves...
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Which statement correctly describes the association between a companion cell and its sieve tube cell?
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Which group of structures are visible in a suitably stained plant cell using a high power (x400) light microscope? [Table_1]
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What are always present in prokaryote cells?
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A microscope has a resolution of 200 nm. Which of the following organelles would not be resolved using this microscope?
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Which molecule in the key is sucrose?
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Which level of protein structure maintains the globular shapes of enzymes?
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