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Introduction To Plants
 

Introduction To Plants

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    Introduction To Plants Introduction To Plants Presentation Transcript

    • Plants Section One
    • Objectives
      • Summarize how plants are adapted to living on land.
      • Distinguish nonvascular plants from vascular.
      • Relate the success of plants on land to seeds and flowers.
      • Describe the basic structure of a vascular plant.
    • Adaptations of Plants on Land
      • #1 Absorbing Nutrients – To survive on land, plants evolved the ability to absorb mineral nutrients from the soil.
      Nodules full of nitrogen-fixing bacteria on the roots of a soy bean plant
      • #2 Preventing Water Loss – to survive on land, plants evolved a waxy outer covering called a cuticle and stomata for gas exchange.
      Adaptations of Plants on Land
    • Cuticle and Stoma Sketches Cuticle Cross Section Stoma
    • Cuticle and Stoma Sketches Cuticle Cross Section Stoma
    • Adaptations of Plants on Land
      • #3 Reproducing on Land – To survive on land, plants use pollen to reproduce without water.
      Pollen on an ant
    • Adaptations of Plant Tissues
      • #1 Advantages of Conducting Tissues – Vascular plants have a system of well-developed tissues that transport water in a plant.
    • Adaptations of Plant Tissues
      • #2 Advantages of seeds – Seeds protect and nourish a plants embryo
    • Adaptations of Plant Tissues
      • #3 Advantages of Flowers – Flowers make reproduction more efficient by promoting pollination.
    • Kinds of Plants
      • Nonvascular Plants
        • Small
        • Lack vascular tissue
        • Examples = moss, liverworts and hornworts
      simple complex This moss is used to determine levels of pollutants Liverworts in central Texas It’s easy to see how “Hornworts got their names!
    • Kinds of Plants
      • Seedless Vascular Plants
        • Produce spores with thickened walls to prevent them from drying out.
        • Include ferns, club mosses, horse tails
      simple complex Spores on the underside of fern leaves. Horse tails Club mosses in Canada
    • Kinds of Plants
      • Gymnosperms
        • Seed plants that produce cones
        • Include conifers, cycads and ginkgoes
      simple complex Spores on the underside of fern leaves. The unique fan-like leaves of the ginkgo tree An old pine tree in California
    • Kinds of Plants
      • Angiosperms
        • Seed plants that produce fruit and flowers.
        • Divided into 2 main groups
      simple complex Sunflowers in a field Yep, grass flowers too A large Sugar Maple Tree
    • Monocots Verses Dicots Floral Parts in 4’s or 5’s Floral Parts in 3’s
    • Monocots Verses Dicots Net-like leaf veins Parallel leaf veins
    • Monocots Verses Dicots Taproot System Fibrous root system
    • Monocots Verses Dicots Vascular tissue in rings Vascular Tissue Scattered
    • Monocots Verses Dicots Includes: Roses, oaks, sunflowers and most non-conifer trees. Includes: grass, lilies, orchids, and palm trees. Vascular tissue in rings Vascular Tissue Scattered Taproot System Fibrous root system Net-like leaf veins Parallel leaf veins Floral Parts in 4’s or 5’s Floral Parts in 3’s
    • Name that Angiosperm!! Monocot !
    • Name that Angiosperm!! Dicot!
    • Name that Angiosperm!! Monocot !
    • Name that Angiosperm!! Monocot !
    • Name that Angiosperm!! Dicot!
    • Name that Angiosperm!! Monocot !
    • Name that Angiosperm!! Dicot!
    • Plants in our lives
      • Fruits and vegetables
      • Crops
      • Wood
      • medicine
      • Fibers
    • Reproduction in Plants section 2 Reproduction in Seed Plants Section 2
    • Sexual Reproduction in Seed Plants
      • Objectives
        • Distinguish the male and female gametophytes of seed plants.
        • Describe the function of a seed.
        • Relate the parts of a flower to their function
        • Summarize the life cycle of an angiosperm
    • Important Vocabulary 1
      • anther
        • The pollen bearing portion of a stamen in flowering plants.
      • carpels
        • A leaf like floral structure enclosing the ovule or ovules of angiosperms.
      • corolla
        • Petals, collectively; usually the colored flower parts.
      • egg
        • A female gamete.
      • embryo sac
        • The female gametophyte of a flowering plant, inside the ovule.
    • Important Vocabulary 2
      • endosperm
        • In plants a triploid tissue containing stored food, develops from the union of a sperm nucleus and two nuclei of the central cell of the female gametophyte. Found only in angiosperms.
      • filament
        • A chain of cells, but in flowers it is the stalk of a stamen.
      • fruit
        • In angiosperms a matured, ripened ovary or group of ovaries and associated structure. Contains the seeds.
      • gametophyte
        • The haploid (n) gamete producing gerneration (plants have alternating haploid and diploid generations).
    • Important Vocabulary 3
      • ovary
        • In flowering plants the enlarged basal portion of a carpel or fused carpel containing the ovule or ovules. Ovary matures to become the fruit.
      • ovules
        • In seed plants a structure composed of a protective outer coat, a tissue specialized for food storage, and a female gametophyte with an egg cell. Becomes a seed after it is fertilized.
      • pollen
        • In seed plants, spore consisting of an immature male gametophyte and a protective outer covering.
      • seed
        • A complex structure formed by the maturation of the ovule of seed plants following fertilization; upon germination a seed develops into a plant. Seed is made up of a seed coat, embryo and a food reserve.
    • Important Vocabulary 4
      • stamens
        • The male structure of a flower which produces pollen.
      • stigma
        • In plants, the region of a carpel serving as a receptive surface for pollen.
      • style
        • In angiosperms, the stalk of a carpel which the pollen tube grows through.
      • zygote
        • The diploid (2n) cell resulting from the union of male and female gametes (fertilization).
    • Reproductive Structures
      • Tiny gametophytes of seed plants develop from spores that remain within saprophyte tissues.
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