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32 Cards in this Set
- Front
- Back
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Stomata
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Microscopic pores in the surface of leaves, where gas exchange occurs.
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Cuticle
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Waxy coating that helps prevent excessive water loss
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Secondary Product
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Not produced by the primary mainstream metabolic pathways common to all plants.
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Primary Products
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Amino acids synthesized by plants. Like cellulose
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Lignin
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A secondary product, hardens the cell walls of wood tissues in many plants
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Sporopollenin
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Secondary product, a polymer that is resistant to almost all kinds of environmental damage
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Gametangia
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Early plants' reproduction; organs that have protective jackets of sterile cells that prevent the gametes from drying out
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Embryophytes
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A term that emphasizes a key adaptation that contributed to success on land
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Bryophytes
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Lack vascular tissue
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Antheridium
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male gametangium, flagellated sperm
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Archegonium
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Female gametangium
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Sporaangium
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Where haploid spores are produced
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Xylem
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Tube shaped cells that carry water and minerals up from roots
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Phloem
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Living tissue with food-conducting cells arranged into tubes that distribute sugars, amino acids, organic nutrients
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Important reproductive adaptations in seed plants
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Reduction of the gametophyte
Advent of the seed Evolution of pollen |
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Seed
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Consists of a sporophyte embryo packaged along with a food supply within a protective coat
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Integuments
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Additional layers of sporophyte tissues that envelop the megasporangium of seed plants
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Tracheids
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Cells that conduct water in conifers (early xylem)
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Vessel Elements
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Shorter, wider cells evolved from tracheids. More specialized in water transport than support
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Fiber
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Cell that reinforces xylem, also evolved from tracheids
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Sepals
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Enclose bottom of flower
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Petals
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Attract insects
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Stamen
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Male flower part, includes filament and anther
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Carpel
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Female flower part, includes stigma and style
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Stigma
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Receives pollen
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Stem
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Alternating system of nodes and internodes
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Axillary bud
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In the angle formed by each leaf and stem, had the potential to form a branch shoot
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Apical dominance
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The presence of the terminal bus is partly responsible for inhibiting the growth of axillary buds
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Protoplast
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The contents of the cell exclusive of the cell wall
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Parenchyma cells
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Primary walls thin & flexible
Lack secondary walls Protoplast has a large central vacuole Performs most metbolic functions |
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Collenchyma cells
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Helps support young parts of the plant without restricting growth.
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Schrenchyma cells
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Supporting elements with secondary walls strenghtened by lignin.
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