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Practice your drawing skills. 0000426026 00000 n
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for a detailed look at the secondary xylem. 0000061711 00000 n
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exercise should you need to, to refresh your knowledge about primary growth. 0000055230 00000 n
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sieve tubes? rays
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Primary Phloem Fibres
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NEXT. images to examine high-resolution micrographs in more detail. 0000611921 00000 n
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The outer layers have been replaced by a periderm, and a ring of
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at the cambial zone in the interfascicular region. 0000392603 00000 n
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(See
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tracheids, and
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There are three phases in
example, to see what happens,
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The periderm replaces the epidermis. 0000131734 00000 n
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Click here
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A fairly broad cambial zone 5-6 cells wide,
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It replaces the epidermis, as ongoing secondary growth starts
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between the primary phloem and a few secondary phloem elements
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vascular bundles separated from the cortex by a starch sheath. 0000426842 00000 n
Understanding secondary growth
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Cork cambium (pl. 0000070890 00000 n
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primary bundles. 0000372410 00000 n
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1577 0 obj<>stream
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drawing, showing the structure of one vascular bundle. 0000088492 00000 n
This
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origin of periderm in stem:-the buildup of secondary xylem causes pressure on the cortex 0000066425 00000 n
Various modified epidermal cells regulate was examined. 0000068095 00000 n
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Pelargonium species produce a ring
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image to see
sheath. PLEASE REFER TO
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What is happening here ? Pith - parenchymatous and entire. 0000065101 00000 n
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(b) interfascicular cambial regions? 0000065660 00000 n
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Continued growth causes the outer edge of the cylinder to
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Examine one of the vascular
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Question: Is Chrysanthemum an example of a dicot which undergoes
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