Interactive Video Script Template
Lesson
Objective
Course
Semester
Unit
Lesson
Science 6
B
3
4
Students will identify the structures and traits of different plants that
help them successfully perform photosynthesis.
CLIP A
Introduction – 45 to 60 seconds
Visual
Audio
<Image>
Have you ever looked at the back of a
food package and wondered where the
calories come from?
http://www.morguefile.com/archive/display/
143979
<image>
http://pixabay.com/en/grasses-sunsetlandscape-plant-338496/
Producers are the first step and they use
the energy of the sun to make sugar
through photosynthesis.
<image>
http://pixabay.com/en/horse-eating-grassanimal-699386/
These producers are then eaten by
consumers, which are organisms who
cannot make their own food.
<image>
http://pixabay.com/en/sunset-sky-suncloud-twilight-476465/
Producers use the light energy from the
sun to produce food. Their food is in the
form of a sugar called glucose.
<image>
http://pixabay.com/en/daisy-flower-macroflowers-lawn-582925/
Producers include plants, like leaves,
grasses, flowers, seeds, roots, and bark.
<image>
http://pixabay.com/en/flower-garden-bluesky-hokkaido-250016/
Question for Clip A
Stem: What type of food is produced in the
process of photosynthesis?
Answers for Question A
A. Nutrients
B. Carbon
C. Glucose
D. Oxygen
There are so many different types of
plants, and that means that there are
different structures and traits of these
plants that help them to make their food.
Correct Response  C
Correct – Go to Clip B
Incorrect – Go to Clip E
CLIP B
<image>
http://pixabay.com/en/drops-plant-leaveswater-plant-43481/
Build on Introduction – 25 to 35 seconds
Water is a required material for the
photosynthesis reaction, so the plant
needs to have a way to get water and
transport it throughout the entire plant.
<image>
http://pixabay.com/en/tree-root-waternature-forest-711514/
Many plants have roots and stems. The
roots absorb water from the ground and
the leaves and stems are used to
transport the water.
<image>
Plants with a vascular system have
special structures called xylem (zie-lum)
and phloem (flow-um), shown here. Xylem
carries water up through the plant so that
photosynthesis can take place.
http://commons.wikimedia.org/wiki/File:MA
GNIFICATION_OF_PHLOEM_OR_XYLEM
_TUBES_IN_DOUGLAS_FIR_WOOD_TA
KEN_THROUGH_A_MICROSCOPE_IN_N
EW_WESTMINSTER,_BRITISH...__NARA_-_555171.jpg
<image>
http://pixabay.com/en/moss-forest-softgreen-fluffy-256974/
Other plants don’t have roots, and we call
them non-vascular (non-vass-cue-lur)
because they can’t transport water. They
are usually found in damp and shady
areas because they need a constant
supply of water from the ground.
Question for Clip B
Stem: What do we call plants without
roots?
Answers for Question B
A. Vascular
B. Xylem
C. Phloem
D. Non-vascular
Correct Response  D
Correct – Go to Clip C
Incorrect – Go to Clip F
CLIP C
Build on Clip B – 25 to 35 seconds
Visual
Audio
<image>
http://pixabay.com/en/abstractbackground-backgrounds-21851/
Although all green plants can perform
photosynthesis, not all cells of the plant
can carry out photosynthesis.
<image>
The plant has specialized its cells so that
http://commons.wikimedia.org/wiki/File:Clor photosynthesis only occurs in certain
ofila_3.jpg
cells. In this way, the plant limits its
exposure to waste products.
<image>
http://pixabay.com/en/journal-greendurchleuchted-52800/
Do you remember that plants have a
special structure in the leaves called
chloroplasts? It is in these structures that
the reactions of photosynthesis happen.
http://en.wikipedia.org/wiki/File:Chlorophyll
_a_antenna_complex.jpg
Inside the chloroplast, the pigment
molecule called chlorophyll acts as an
antenna to capture the red and blue
wavelengths from the sun’s light.
Question for Clip C
Stem: Where does photosynthesis happen
in the plant?
Answers for Question C
A. In all cells
B. In chloroplasts
C. In phloem
D. In xylem
Correct Response  B
Correct – Go to Clip D
Incorrect – Go to Clip G
CLIP D
Build on Clip C – 25 to 35 seconds
Visual
Audio
<image>
http://commons.wikimedia.org/wiki/File:Chl
oroplast_(teacher_edition)-key.svg
If we look closer at the photosynthesis
process, there are actually two different
steps that happen, and these happen in
different structures of the plant cell.
<image, remove labels except for those of
#3, Thylakoid”>
http://commons.wikimedia.org/wiki/File:Chl
oroplast_mini.svg
Light-dependent photosynthesis reactions
happen in the thylakoid (thigh-lah-koyd)
membrane of the chloroplast where the
light energy is absorbed and changed into
chemical energy.
<image, remove labels except for those of
#6, Stroma”>
http://commons.wikimedia.org/wiki/File:Chl
oroplast_mini.svg
Light-independent reactions happen in the
stroma (stroe-mah) of the chloroplast
where ATP (say the letters) and NADPH
(say the letters) are used to make sugar
molecules.
<image>
http://commons.wikimedia.org/wiki/File:Thy
lakoid_membrane.png
It is important that the plant separates the
two reactions because the energy
molecules and the enzymes for each
reaction need to be separated from one
another.
Question for Clip D
Stem: Where do the light-dependent
reactions of photosynthesis happen?
Answers for Question D
A. Thylakoid membrane
B. Chlorophyll
C. Stroma
D. Pigments
Correct Response  A
Correct - Success Alert
Incorrect – Go to Clip H
CLIP E
Remediation for Clip A – 25 to 35 seconds
Visual
Audio
<image>
http://pixabay.com/en/sun-sunset-seawater-corfu-greece-115448/
The organisms that are the first level in
the food chain are the producers. Using
only the energy of the sun, they can make
their own food.
<image>
http://pixabay.com/en/lama-peru-sacredvalley-animal-336180/
Producers use the light energy of the sun
to make food in the form a sugar called
glucose. Producers are eaten by
consumers.
<image>
http://pixabay.com/en/cook-food-cookingvegetable-527810/
Some types of producers that you might
recognize include plants, like leaves,
grasses, flowers, seeds, roots, and bark.
<image>
http://pixabay.com/en/radishes-root-
All of these different types of plants look
different, so it should be no surprise that
vegetables-pink-red-201555/
they need to have different structures to
get the materials they need for
photosynthesis.
Question for Clip E
Stem: Which of the following organisms is
an example of a producer?
Answers for Question E
A. Human
B. Frog
C. Flower
D. Mushroom
Correct Response  C
Correct – Go to Clip B
Incorrect – Go to Clip F
CLIP F
Remediation for Clip B – 25 to 35 seconds
Visual
Audio
<image>
http://pixabay.com/en/spring-in-the-earlysummer-plant-606724/
One of the materials that producers need
for photosynthesis is water, so the plant
needs to have a way to get the water and
move it through its entire body.
<image>
http://pixabay.com/en/roots-trees-banyanficus-woods-257231/
Most of the plants that you are familiar
with have roots and stems that are used
to absorb water from the ground and
move it throughout the plant.
<image, remove labels and relabel 3 as
“xylem” and 4 as “phloem”>
http://commons.wikimedia.org/wiki/File:Ste
m-histology-cross-section-tag.svg
In these types of plants, the transportation
of water happens because of special
structures in the vascular system called
xylem and phloem. Xylem moves the
water through the plant to the leaves,
where photosynthesis happens.
<image>
http://pixabay.com/en/%C5%A1umavakvilda-2014-stones-stoves-546020/
Question for Clip F
Stem: What structure of the plant carries
the water through the plant to the leaves?
Answers for Question F
A. Xylem
B. Phloem
C. Roots
D. Stems
Other types of plants don’t have these
structures of roots and stems. They are
called non-vascular because they can’t
transport water. They need to live in damp
places so that they can absorb water from
the ground.
Correct Response A
Correct – Go to Clip C
Incorrect – Intervention Alert – then Clip B
CLIP G
Remediation for Clip C – 25 to 35 seconds
Visual
Audio
<image>
http://pixabay.com/en/journal-green-leafveins-filigree-141494/
All green plants can perform
photosynthesis, but photosynthesis
doesn’t happen in every cell of the plant.
<image>
http://en.wikipedia.org/wiki/User:Kelvinson
g/sandbox/Chloroplast#/media/File:Leaf_Ti
ssue_Structure.svg
Only certain cells in the plant are
specialized for the photosynthesis
reaction. Waste products are produced in
the reaction and this is how the plant can
contain the waste.
<image>
http://pixabay.com/en/chloroplastchlorophyll-unlabelled-35023/
Remember that plants have special
structures needed for photosynthesis
called chloroplasts in their leaves.
<image>
http://pixabay.com/en/spectrum-lightspectrum-optics-113364/
Question for Clip G
Stem: What structures are found in the
leaves that are required for
photosynthesis?
Answers for Question G
A. Waste products
B. Chloroplasts
C. Roots
D. Xylem
Correct Response B
Correct – Go to Clip D
Incorrect – Go to Clip F
These structures contain the light
antennas to capture the sun’s energy,
called the pigment chlorophyll. It collects
the red and blue wavelengths of the sun’s
light.
CLIP H
Remediation for Clip D – 25 to 35 seconds
Visual
Audio
<image>
Inside the specialized cells of the plant,
http://en.wikipedia.org/wiki/User:Kelvinson the reaction is separated into two different
g/sandbox/Chloroplast#/media/File:Chlorop steps in different structures of the cell.
last_II.svg
<image, remove labels except “thylakoid
membrane”>
http://commons.wikimedia.org/wiki/File:Chl
oroplast_diagram.svg
In the thylakoid membrane of the
chloroplast, reactions called lightdependent happen, in which light energy
is absorbed by chlorophyll and changed
into chemical energy.
<image, remove labels except “stroma ”>
http://commons.wikimedia.org/wiki/File:Chl
oroplast_diagram.svg
In the stroma of the chloroplast, this
chemical energy is used to change 6
molecules of water and carbon dioxide
into 1 sugar molecule. This is called the
light-independent reaction.
<image>
http://commons.wikimedia.org/wiki/File:Thy
lakoid_membrane.png
Question for Clip H
Stem: Where do the light-independent
reactions of photosynthesis happen?
Answers for Question H
A. Thylakoid membrane
B. Chlorophyll
C. Stroma
D. Pigments
Correct Response  C
Correct – Success Alert
Incorrect – Go to Clip G
The plant needs to separate these
reactions to keep the energy molecules
separate and also to keep the enzymes
needed for each reaction separate from
one another.