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Introduction to Plants
The Big Idea: Plants have several common characteristics that can be classified by their structures. SPI’s Explain the basic functions of a major organ system. Match flower parts with their reproductive functions.
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Preview Section 1 What Is a Plant? Section 2 Seedless Plants
Introduction to Plants Preview Section 1 What Is a Plant? Section 2 Seedless Plants Section 3 Seed Plants Section 4 Structures of Seed Plants Concept Mapping
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List the differences between plant cells and animal cells.
Section 1 What Is a Plant? Bellringer # 1 List the differences between plant cells and animal cells. Open text to pg 152. Set up notes for 6.1. Turn test corrections in.
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Objectives Identify four characteristics that all plants share.
Section 1 What Is a Plant? Objectives Identify four characteristics that all plants share. Describe the four main groups of plants.
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Section 1 What Is a Plant? Plant Characteristics Photosynthesis Process plants use energy from sunlight to make food from carbon dioxide and water. Sunlight + 6CO2 + 6H2O > C6H12O6 + 6O2 Cuticles A cuticle is a waxy layer that coats most of the surfaces of plants that are exposed to air.
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Section 1 What Is a Plant? Plant Characteristics, continued Cell Walls Plant cells are surrounded by a rigid cell wall. Reproduction Plants have two stages in their life cycle — the sporophyte stage and the gametophyte stage.
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During the gametophyte stage, egg and sperm are produced.
Sporophyte stage: plant makes spores that grow into the gametophyte stage of a plant’s life cycle. During the gametophyte stage, egg and sperm are produced. The fertilized egg grows into a sporophyte plant. FertilizationSportphytesporesgametophytesex cellsfertilization
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Section 1 What Is a Plant? Plant Classification Nonvascular Plants A nonvascular plant doesn’t have specialized tissues to move water and nutrients. Vascular Plants A plant that has tissues to deliver water and nutrients from one part of the plant to another: vascular plants.
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Section 1 What Is a Plant?
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6.1 vocab Photosynthesis Cuticles Nonvascular plant Vascular plant
Gymnosperm Angiosperm
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Contrast vascular and nonvascular plants.
Section 2 Seedless Plants Bellringer #2 Contrast vascular and nonvascular plants. Open text to pg 156. Set up notes for 6.2
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Section 2 Seedless Plants
Objectives List three nonvascular plants and three seedless vascular plants. Explain how seedless plants are important to the environment. Describe the relationship between seedless vascular plants and coal.
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Section 2 Seedless Plants
Nonvascular Plants Mosses often live together in large groups, have leafy stalks, and a rhizoid: rootlike structure that holds the plants in place and helps plants get water and nutrients.
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Moss sporophyte
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Section 2 Seedless Plants
Nonvascular Plants, continued Liverworts and Hornworts small, nonvascular plants that usually live in damp places. The Importance of Nonvascular Plants Nonvascular plants are usually the first plants to live in a new environment. Form a thin layer of soil when they die.
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Liverwart Hornwart
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Section 2 Seedless Plants
vascular Plants Ferns grow in many places, from the cold arctic to humid tropical forests. have a rhizome: a horizontal, underground stem that produces new leaves, shoots, and roots. Frond-fern leaf
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Section 2 Seedless Plants
Seedless Vascular Plants, continued The Importance of Seedless Vascular Plants Ferns, horsetails, and club mosses help form soil and prevent soil erosion. Some can be eaten, used in dietary supplements, shampoos, and skin-care products.
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Section 2 Seedless Plants
Seedless Vascular Plants, continued The remains of ferns, horsetails, and club mosses form coal that humans rely on for energy.
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6.2 vocab Moss Fern Frond Rhizoid Rhizome Coal
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What is a benefit of seedless vascular plants?
Section 3 Seed Plants Bellringer # 3 What is a benefit of seedless vascular plants? Open text to pg 160. Set up notes for 6.3
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Section 3 Seed Plants Objectives Describe three ways that seed plants differ from seedless plants. Describe the structure of seeds. Compare angiosperms and gymnosperms. Explain the economic and environmental importance of gymnosperms and angiosperms..
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Characteristics of Seed Plants
Section 3 Seed Plants Characteristics of Seed Plants Seed plants differ from seedless plants in the following ways: Seed plants produce seeds. The gametophytes of seed plants do not live independently of the sporophyte. For sexual reproduction, the sperm of seed plants do not need water to reach an egg.
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Section 3 Seed Plants The Structure of Seeds A seed is made up of three parts: a young plant (sporophyte), stored food, and a seed coat surrounds and protects the young plant.
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Section 3 Seed Plants Gymnosperms, continued The Importance of Gymnosperms People use conifer wood for building materials and paper products. Resin, a sticky fluid produced by pine trees, is used to make soap, turpentine, paint, and ink.
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Section 3 Seed Plants Gymnosperms, continued Gymnosperm Life Cycle Sperm from pollen in the male cone fertilize the eggs of the female cone. A fertilized egg develops into a young sporophyte within the female cone. Pollination: transfer of pollen from the male reproductive structures to the female structures of seed plants.
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Section 3 Seed Plants Angiosperms Angiosperms are vascular plants that produce flowers and fruit. Angiosperm Reproduction Flowers attract animals that help spread pollen to help them reproduce. Fruits surround and protect the seeds, and help distribute their seeds.
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The Importance of Angiosperms
Section 3 Seed Plants Angiosperms, continued The Importance of Angiosperms Major food crops, such as corn, wheat, and rice, are flowering plants. Used to make cloth fibers, rope, medicines, rubber, perfume oil, and building materials.
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6.3 vocab Pollen Pollination Cotyledons Conifers Xylem (section 4)
Phloem (section 4)
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Why do angiosperms have flowers and fruits?
Section 4 Structures of Seed Plants Bellringer # 4 Why do angiosperms have flowers and fruits? Open text to pg 166. Set up notes for 6.4
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Objectives List three functions of roots and three functions of stems.
Section 4 Structures of Seed Plants Objectives List three functions of roots and three functions of stems. Describe the structure of a leaf. Identify the parts of a flower and their functions.
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There are two types of vascular tissue in plants:
Section 4 Structures of Seed Plants Characteristics of Seed Plants There are two types of vascular tissue in plants: Xylem: provides support and conducts water and nutrients from the roots. Phloem : conducts food in vascular plants.
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Transporting Materials Throughout the Plant
Section 4 Structures of Seed Plants Transporting Materials Throughout the Plant Click below to watch the Visual Concept. Visual Concept
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supply plants with water and dissolved minerals.
Section 4 Structures of Seed Plants Roots Root Functions supply plants with water and dissolved minerals. hold plants securely in the soil. store surplus food made during photosynthesis
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Section 4 Structures of Seed Plants
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connects a plant’s roots to its leaves and flowers.
Section 4 Structures of Seed Plants Stems Stem Functions: connects a plant’s roots to its leaves and flowers. support the plant body. transport materials between the root system and the shoot system. store materials.
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Leaf: make food for the plant.
Section 4 Structures of Seed Plants Leaves Leaf: make food for the plant.
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Section 4 Structures of Seed Plants
Flowers Sepals and Petals The modified leaves that make up the outermost ring of flower parts and protect the bud: sepals. Petals: broad, flat, thin leaflike parts of a flower. Attract pollinators.
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The male reproductive structure of a flower: stamen.
Section 4 Structures of Seed Plants Flowers, continued The male reproductive structure of a flower: stamen. It is made up of a stalky filament and a pollen producing anther.
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A pistil is the female reproductive structure of a flower.
It is made up of the sticky stigma, a long slender style, and a rounded base called the ovary. The ovary contains ovules that have eggs. The ovary develops into a fruit.
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6.4 vocab Sepal Petal Stamen Anther Pistil Ovary
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Introduction to Plants
Concept Mapping Use the terms below to complete the concept map on the next slide. angiosperms pollen vascular gametophyte plants xylem sporophyte nonvascular
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Bellringer # Introduction to Plants
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