Transcript 4-3-powernotes-pptx

Nonvascular plants
Vascular plants
Spore
Gymnosperm
Angiosperm
Germinate
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Tubes for Transport
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Tubes for Transport
• Nonvascular plants are simple plants that
lack vascular tissue, which easily transports
water from the ground into the plant.
• They grow in damp places and almost never
grow taller than 10 cm.
• Nonvascular plants move materials by
absorbing nutrients and water in the same way
that a sponge absorbs water.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
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• Vascular plants have vascular tissues that
allow them to move water, nutrients, and
sugars across long distances.
• Vascular plants have true leaves and roots.
• Most plants, including trees, grasses, and
shrubs, are vascular plants.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Tubes for Transport
• Vascular tissue contains tiny tubes, which
move water and nutrients up a plant in the
same way that water moves up a straw.
• Vascular tissue includes two kinds of
smaller tubes. Xylem carries water and
nutrients from the roots to the other parts
of the plant.
• Phloem carries sugar from the leaves to
the rest of the plant.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Tubes for Transport
Vascular & nonvascular plants
Vascular
plants
Nonvascular
plants
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
No Seeds, Please!
• A spore
spore is a single
reproductive cell that can
grow into a new plant.
• Both nonvascular plants,
such as mosses and
liverworts, and vascular
plants, such as ferns, use
spores to reproduce.
• All of these plants have 2
forms in their life cycles.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
No Seeds, Please!
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
No Seeds, Please!
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
No Seeds, Please!
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
No Seeds, Please!
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Seed Power!
• While spores need to stay
moist and sprout soon after
release, seeds have a
covering that protects them
until conditions are right for
sprouting.
• Gymnosperms are plants
that do not produce seeds in
flowers. Gymnosperm seeds
have a protective seed coat,
but are not enclosed by
fruit.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Seed Power!
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Seed Power!
• Cone-producing plants,
called conifers, are the
most common
gymnosperms. Conifers
include pine, fir, spruce,
and cedar trees.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Seed Power!
• Angiosperms are plants that
produce seeds in flowers.
• Since angiosperm seeds are
often enclosed in fruit, they are
easily spread when animals eat
the fruits.
• Gymnosperm seeds may also be
spread by animals, but typically
fall to the ground and grow
where they land.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Seed Power!
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit and Seed
• Typical flowers have both male and
female reproductive parts.
• A male part, the anther, produces
pollen, or the sperm.
• The female parts include the stigma
and the ovary, which contains eggs in
ovules.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
• Identify the following parts of a flower: anther, ovary, ovules, petals, stigma.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
• Flowers produce nectar that
organisms may eat. When an
organism gathers nectar, pollen may
brush onto it.
• The organism carries this pollen when
it moves to the next flower. This
process is called pollination.
• When the pollen reaches the stigma,
it travels down to the ovary and
fertilizes the ovules. This process is
called fertilization.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
• Fertilized ovules develop into seeds,
and the ovule wall becomes a seed
coat. The ovary that holds the seeds
develops into the fruit, such as a
pumpkin.
• The development of a pumpkin seed
into a mature pumpkin fruit follows a
sequence of events…
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
From Flower to Fruit to Seed
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
How Seeds Grow
• Seeds have a hard outer coat
that protects them and allows
them to rest until the
environment is right for
growing.
• Many plant seeds rest during
winter and then germinate, or
start to grow, when the ground
becomes warm and moist in
the spring.
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
How Seeds Grow
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Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
How Seeds Grow
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 4 Lesson 3 How Do Plants Grow and Reproduce?
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