Herbaceous Stems

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Herbaceous Stems
Stem Review
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Which is monocot and which is dicot?
Dicot Monocot
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Herbaceous Dicot
Epidermis
Cortex
Phloem
Vascular Cambium
Xylem
Pith
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Herbaceous Monocot
Epidermis
Vascular Bundle
Pith
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Monocot Vascular Bundle
Phloem
Xylem
Air Space
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Woody Stem
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Heartwood (dark in color)
Sapwood (light)
Cork
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How old is this tree?
19 years
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Cork
Cortex
Annual Ring
Pith
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Cork
Vascular cambium
Phloem
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Terminal bud
Bundle scar
Lateral bud
Bud scale
Leaf scar
Bud scale scar
Lenticel
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Makes cork cells Model for transport of
sugars Model for transport of water Makes
secondary vascular tissue Storage in the center
of the stem Dark xylem used for support Gas
exchange in woody stems Point of leaf
attachment Specialized stem used for
support Light xylem used to transport Distance
between 2 nodes
Cork cambium
Pressure flow
Cohesion-tension
Vascular cambium
Pith
Heartwood
Lenticels
Node
Tendril
Sapwood
Internodes
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What are the functions of a stem?
photosynthesis
support
transport
reproduction
What tissues are found in bark?
Cork cambium
Cork
Phloem
Cortex
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Annual rings are the result of the contrast
between what two types of cells?
Springwood and summerwood
How are the cortex and pith similar?
Both are made of parenchyma cells
How are they different?
Pith is found in the center and cortex around the
outside