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34 Cards in this Set
- Front
- Back
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Cotyledons
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"seed leaves" that store food for developing embryo
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Angiosperms
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have thier ovules and seeds enclosed within ovaries and fruit
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Vascular Cambian
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narrow cylindrical sheath of cells that produce secondary xylem and phloem (wood) in stems and roots.
Dicots |
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Cork Cambian
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narrow cylendrical sheath of cells that produces cork (bark).
Dicots |
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Taproots
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one large root that may branch
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Fibrous rots
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numerous, small roots
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Dicots
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nearly 3/4 of all flowering plants. Flowering trees and shrubs
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Monocots
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Herbaceous plants. Lilies, Grasses, Orchids, Irises, Palms
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Magnoliophyta Habitat
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Freshwater,and saltwater, Deserts, JUngles, artic regions, Himalayas.
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Magnoliophyta Metabolism
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Most are photosynthetic autotrophs
some are saphrobes very few are parasitic |
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Peduncle
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stalk
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Recepticle
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Swelling at end of the peduncle to which all parts of the flower are attached
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Sepals
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Outermost whorl of green, leaf-like structures
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Calyx
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all sepals
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Petals
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whorl of flower parts just above the calyx
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Corolla
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all petals
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Purpose of Petals
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Attract animals for pollenation
often missing in vind pollenated plants Some petals have UV markers for bees |
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Pistil
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centre of the flower, green vase like. Consists of Stigma, Style, Ovary, Ovule
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Stigma
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swelling at top of pistil
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Style
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Stalk of Pistil
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Ovary
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Swollen base of Pistil which later becomes a fruit
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Ovule
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Contains a megaspore which becomes the female gametophyte, and eventually becomes a seed.
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Stamens
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attached to recepticle at the base of the pistil. Consists of Filament and anther
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Filament
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Stalk of the stamen
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Anther
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Contains microspores which give rise to pollen grains
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Monoecious
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male and female unisexual flowers grow on the same plan. Also male and female parts occur on different parts of the same plant
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Dioecious
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male and female flower parts occur on separate plants
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Flower Arrangements
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One peduncle
produced in clusters called inflorescences (peduncle has numerous stalks called pedicels Some have single ovaries some have multiple ovaries |
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Plant Life Cycle
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can vary from less than a month to 150 years
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Annuals
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Complete their life cycle in one year
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Biennials
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Complete their life cycle in two years
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Perennials
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Complete their life cycle in several years
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Megasporocyte
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While flower is developing in the bud a diploid megaspore mother cell becomes differentiated in the ovule
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meiosis in Female plants
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produces four haploid megaspores
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