19754117
Description
Flashcards by Miriah King, updated more than 1 year ago
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Created by Miriah King
about 5 years ago
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| Question | Answer |
| Dermal Tissue | •Single OUTER layer of tightly packed epidermal cells – covers entire plant •Protects against water loss and pathogens *Cuticle & Periderm |
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Vascular Tissue
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Dermal (binary/octet-stream)
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•INNER layer, Transports between roots & shoots Xylem cells – transport water up from roots Phloem cells – transports food from leaves to other parts |
| Ground Tissue | MIDDLE layer, particularly parenchyma, collenchyma, & sclerenchyma cells |
| Periderm | Protective, dermal tissues; replaces epidermis in woody plants |
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Parenchyma cells
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Rad (binary/octet-stream)
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Most abundant; throughout plant Large, central space Perform most metabolism; synthesizes and stores organic products Ex. chloroplasts; fleshy tissue of fruit |
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Collenchyma cells
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Cel (binary/octet-stream)
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Grouped in strands; supports young parts Thick, flexible; lack secondary cell walls Ex. “Strings” of a celery stalk |
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Sclerenchyma cells
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Nut (binary/octet-stream)
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Fiber like cells; mechanical support for older, non growing parts of plants Rigid, thick secondary walls Ex. Hemp, flax, nut shells |
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If stomata is CLOSED...
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Stoma2 (binary/octet-stream)
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•No H2O lost, BUT CO2 not available, so NO photosynthesis •Typically occurs when temps are HIGH, or at NIGHT when CO2 is HIGH from respiration |
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If stomata is
OPEN...
Image:
Stoma1 (binary/octet-stream)
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•CO2 can enter, BUT H2O is lost (transpiration), so risk of desiccation •Typically occurs during the DAY to provide enough CO2 for photosynthesis |
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Monocots
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Lil (binary/octet-stream)
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•Single cotyledon (seed leaf) •Parallel leaf veins •Flowers = multiple of 3 Ex. Lilies, orchids, grasses |
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Eudicots
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Rose (binary/octet-stream)
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•Two cotyledons (seed leaves) •Net leaf veins •Flowers= multiples of 4 or 5 Ex. Roses, peas, beans, oaks |
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