Transcript Photosynthesis - Rutherford County Schools

Photosynthesis
Table of Contents
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Science Process Skills-----------------------1
Parts of a Cell----------------------------------#
Classifying Animals---------------------------#
Ecosystems-------------------------------------#
Food Chains/Food Webs--------------------#
Photosynthesis---------------------------------#
Make this the next clean page in your journal
Plants
• Plants are an important part of our
environment. Without plants, animals and
human beings could not survive.
• Think of a few ways we, as humans need
plants…
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Plants produce us with:
food
oxygen
medicines
building materials
seasonings
candy &drinks
industrial products
dyes & decorations
manufactured good
paper
Plants are producers
• Plants are the only living thing able to
make their own food.
• There are a few things plants must have to
survive…
• What do you think those things are?...
THE SUN: MAIN SOURCE OF
ENERGY FOR LIFE ON EARTH
Water
Soil
Carbon Dioxide
• In order to grow, green plants use sunlight
and store its energy in their leaves and
stems.
• Sunlight enables plants to convert water
into foods needed by the plant. Plants
also need carbon dioxide, which all
animals (including humans) give off as
they breathe.
This remarkable process is called:
Photosynthesis
Photosynthesis (put in notes)
• Plants need food and can make their own
food.
Green plants need
• 1. carbon dioxide from the air
• 2. water and minerals from the soil
• 3. energy from the sun
Photosynthesis
AN OVERVIEW OF PHOTOSYNTHESIS
• Photosynthesis is the process by which
plants use sunlight to make energy/sugar
and oxygen from carbon dioxide and water
Carbon
dioxide
Water
Glucose
PHOTOSYNTHESIS
Oxygen
gas
Energy for plants (notes)
• The water and carbon dioxide combine
into sugars and oxygen. Sugars are the
food for the plant. Plants use some of the
sugars to grow, and store the rest in their
tissues.
• When you eat a plant, you take in energy
the plants stored.
video
http://www.kscience.co.uk/animatio
ns/photosynthesis.htm
• Recipe for photosynthesis
• http://www.realtrees4kids.org/sixeight/letse
at.htm
Let’s review
• What do plants need to make their own
food?
Plants need water
• Water helps the
seed germinate
• The plant grows
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Plants need the sun
• The sun gives the
plant warmth
• The sun gives the
plant light to help it
make food
The plant needs minerals
• The plant gets
minerals from
the soil to make
it grow strong
and healthy
The end result
EQUATION FOR
PHOTOSYNTHESIS
WATER
6CO2 + 6H2O +ENERGY
CARBON
DIOXIDE
OXYGEN
C6H12O6 + 6O2
GLUCOSE
There is one cell structure that
allows plants to conduct
photosynthesis
• Think of a cell part that plants have and
animals do not…
What is one thing all of these plants have
in common?
(b) Kelp
(c) Euglena
(a) Mosses, ferns, and
flowering plants
They are all green!
WHY ARE PLANTS GREEN?
It's not that easy bein' green
Having to spend each day the color of the leaves
When I think it could be nicer being red or yellow or gold
Or something much more colorful like that…
Kermit the Frog
Why are plants green?
Think back to the parts of a plant cell…
WHY ARE PLANTS GREEN?
Plant Cells
have Green
Chloroplasts
The thylakoid
membrane of the
chloroplast is
impregnated with
photosynthetic
pigments (i.e.,
chlorophylls).
Chloroplats
• Chlororplasts contain pigments that
absorb sunlight. They use the energy to
make food in a process called
photosyntheis.
Put in notes
• Chloroplasts are the only organelles that
can perform photosynthesis.
• The pigment chorophyll gives plants their
green color.
It's not that
easy bein'
green… but it
is essential for
life on earth!
Why is photosynthesis important
for life to exist?
• Every ecosystem is dependent on
photosynthesis.
• Remember!
• The process of how plants make their own
food is photosynthesis.
Homework
• Draw a picture to represent
photosynthesis.
• Under the picture write what is taking
place.