stems, leaves, roots and photosynthesis
DESCRIPTION
Stems, leaves, roots and photosynthesis. Plant body. Modified stems/ Stolon. Modified stems/ Rhizome. Modified stems/ Tuber. Modified stems/ Bulb. Modified stems/ Corm. Leaf. A leaf is a stem appendage with a bud in its axil Major function is as a photosynthetic organ. - PowerPoint PPT PresentationTRANSCRIPT
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Stems, leaves, roots and photosynthesis
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Plant body
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Modified stems/ Stolon
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Modified stems/ Rhizome
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Modified stems/ Tuber
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Modified stems/ Bulb
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Modified stems/ Corm
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Leaf
• A leaf is a stem appendage with a bud in its axil
• Major function is as a photosynthetic organ
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Leaf arrangement on stem
• Alternate• Opposite• whorled
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• Blade• Petiole
• Leaf type– Simple – compound
A leaf is a stem appendage with a bud at its base.
Leaves
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Leaf venation
• Parallel ( most monocots)
• Pinnate
• Palmate
• Net
• dichotomous
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Parallel
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Pinnate venation, simple leaf
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Palmately divided, palmately veined
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Palmate venation, simple leaf, crenate margin
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Dichotomous
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Palmate venation, simple blade, entire margin, peltate
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Double pinnate compound leaf
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palmately compound, pinnate veined
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Specialized leaves
• Plantlets• Insectivory• Spines• tendrils
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roots
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FibrousTap
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Photosynthesis/ Respiration
• Photosynthesis• 6CO2 + 6H2O+ sunlight+ green plant C6H12O6 + 6O2 + H2O• Carbon dioxide plus water plus sunlight and green plant yields sugar plus oxygen
plus water
• Cellular Respiration• C6H12O6 + 6O2 + 6H2O 6CO2+ 12H2O + 36 ATP
• Sugar plus oxygen plus water yields carbon dioxide plus water plus ATP
• Don’t worry about balancing the equations just know what happens on each side of the equation
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