Lesson 3: Plant-Soil Interactions
Explain
What we’re learning!
By the end of this lesson, you’ll
be able to:
•
Recognize that plants remove
nutrients from the soil
•
Explain the roles of diffusion and
active transport in moving nutrients
from the soil to the plant
•
Relate the root and vascular systems
of the plant to the human circulatory
system
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How do plants
obtain nutrients
from water?
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Warm up: What do you know about
roots? Answer each question true or
false. Check your answers at the end
of this lesson.
1. Plant roots have tiny hairs that absorb water.
2. Plant roots use energy to pump water into
the plant.
3. Nutrients enter root cells through the
process of diffusion.
4. Nutrients enter root cells through the
process of active transport
5. Plants roots grow until they find water.
Copyright © 2013 Discovery Education. All rights reserved.
Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.
Warm up: Features of diffusion
High Concentration
Low Concentration
Warm up: Features of active transport
Energy molecule
(ATP)
Low Concentration
High Concentration
Video-From Seed to Shining Seed
Why do you think plants have so many root hairs?
White
root hairs
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How do nutrients in
the soil water get into
the root hairs?
Copyright © 2013 Discovery Education. All rights reserved. Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.
Diffusion
Lower concentration
Higher concentration
What do you know about roots?
1. Plant roots have tiny hairs that absorb water.
True
2. Plant roots use energy to pump water into the
plant.
False
3. Nutrients enter root cells through the process of
diffusion.
True
4. Nutrients enter root cells through the process of
active transport
True
5. Plants roots grow until they find water.
False
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Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.
How does water, and the
nutrients it contains, get
from the roots to the rest
of the plant?
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Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.
Video-How a plant works
How do sugars,
needed for energy,
reach the lower parts
of the plant?
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Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.
Critical Thinking:
Instructions: Write down three ways
that describes how the plant vascular
system is similar to the human
circulatory system. Then write down
three ways the plant vascular system
is different from the human
circulatory system.
Copyright © 2013 Discovery Education. All rights reserved.
Discovery Education Inc. is a subsidiary of Discovery Communications, LLC.