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Plants Section One
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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.
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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
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Adaptations of Plants on Land
#2 Preventing Water Loss – to survive on land, plants evolved a waxy outer covering called a cuticle and stomata for gas exchange.
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Cuticle and Stoma Stoma Cuticle Cross Section
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Adaptations of Plants on Land
#3 Reproducing on Land – To survive on land, plants use pollen to reproduce without water. Pollen on an ant
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Adaptations of Plant Tissues
#1 Advantages of Conducting Tissues – Vascular plants have a system of well-developed tissues that transport water in a plant.
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Adaptations of Plant Tissues
#2 Advantages of seeds – Seeds protect and nourish a plants embryo
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Adaptations of Plant Tissues
#3 Advantages of Flowers – Flowers make reproduction more efficient by promoting pollination.
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Kinds of Plants Nonvascular Plants Small Lack vascular tissue
simple complex Nonvascular Plants Small Lack vascular tissue Examples = moss, liverworts and hornworts It’s easy to see how “Hornworts got their names! This moss is used to determine levels of pollutants Liverworts in central Texas
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Spores on the underside of fern leaves.
Kinds of Plants simple complex Seedless Vascular Plants Produce spores with thickened walls to prevent them from drying out. Include ferns, club mosses, horse tails Spores on the underside of fern leaves. Horse tails Club mosses in Canada
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Kinds of Plants Gymnosperms Seed plants that produce cones
simple complex Gymnosperms Seed plants that produce cones Include conifers, cycads and ginkgoes Spores on the underside of fern leaves. The unique fan-like leaves of the ginkgo tree An old pine tree in California
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A large Sugar Maple Tree
Kinds of Plants simple complex Angiosperms Seed plants that produce fruit and flowers. Divided into 2 main groups Yep, grass flowers too A large Sugar Maple Tree Sunflowers in a field
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Monocots Verses Dicots
Floral Parts in 3’s Floral Parts in 4’s or 5’s
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Monocots Verses Dicots
Parallel leaf veins Net-like leaf veins
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Monocots Verses Dicots
Fibrous root system Taproot System
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Monocots Verses Dicots
Vascular Tissue Scattered Vascular tissue in rings
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Monocots Verses Dicots
Floral Parts in 3’s Floral Parts in 4’s or 5’s Parallel leaf veins Net-like leaf veins Fibrous root system Taproot System Vascular Tissue Scattered Vascular tissue in rings Includes: grass, lilies, orchids, and palm trees. Includes: Roses, oaks, sunflowers and most non-conifer trees.
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Name that Angiosperm!! Monocot!
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Name that Angiosperm!! Dicot!
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Name that Angiosperm!! Monocot!
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Name that Angiosperm!! Monocot!
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Name that Angiosperm!! Dicot!
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Name that Angiosperm!! Monocot!
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Name that Angiosperm!! Dicot!
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Plants in our lives Fruits and vegetables Crops Wood medicine Fibers
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