Download Document 13756965

69: Plants, Transpiration,
Photosynthesis and Respiration
Objective: After reading
various texts, watching
video clips and viewing
a presentation on plants
and photosynthesis,
explain why it is
important for an
aquarium owner to be
very careful in how s/he
sets up his or her
aquarium.
Warm UpMr. Neumann is very allergic to
bees. He wants scientists to find a
way to kill them all! Mrs. Brooks
is shocked! She tells Mr.
Neumann that without bees he
couldn’t survive. Explain this.
Vocabulary
Tier 2: distinction, consume,
complementary, processes, energy,
products, guard, regulate
Tier 3: organism, photosynthesis,
respiration, glucose, carbon dioxide,
oxygen, chlorophyll, epidermis,
cuticle, stomata, guard cells,
transpiration
Today’s Learning Goals
One of the most general distinctions among organisms is between plants, which use sunlight
to make their own food (photosynthesis) and animals, which consume energy-rich foods.

In plants, chlorophyll (found in chloroplasts) captures
energy from the sun in order to make food during
photosynthesis

Photosynthesis and cellular respiration are complementary
processes: Plants carry on photosynthesis/respiration where food
is broken down into energy

Plants make their own food through photosynthesis, animals
consume energy rich food
Photosynthesis
Media Clip
Brain pop
Photosynthesis
Or
Study Jam
Photosynthesis
70: Photosynthesis and
Transpiration

Objective


Transpiration(water loss through
stomata) regulated by the guard
cells through their opining/closing
Leaves have epidermis with
cuticles and stomata to prevent
water loss; guard cells control the
opening of the stomata
1. Read and annotate the
Photosynthesis and Respiration
article
http://www.aquariumlife.net/articles/
aquatic-plants/pjotosynthesisrespiration-aquatic-plants/152.asp

Classwork
2. Use the information from the
article to Explain why it is
important for an aquarium owner
to be very careful in how s/he sets
up his or her aquarium.
How Does a Plant Make It’s Own
Food?




Plants use carbon dioxide (CO2), water (H2O), and
sun’s energy to make food.
This is called “photosynthesis”
The food gives plants energy
Animals get the
energy stored in
plants when they
eat them.
How Do Plants Get Energy From Sun?


Plants have pigments that
absorb energy from light
Chlorophyll (found in
chloroplasts) is the pigment
used in photosynthesis
What “Food” do Plants Make?


The “food” plants
make is a sugar
called glucose
(C6H12O6).
Glucose and oxygen
(O2) are made during
photosynthesis.
How Do Organisms Get Energy
From Food?



Animals cannot make their own food like plants can.
But, BOTH plants and animals must break down
(digest) food in order to get energy from it (so they
can live, grow, & develop)
Cells do this using Cellular Respiration.
Use the chart to fill in your notes:
Photosynthesis
Food accumulated
Energy from sun stored in glucose
Carbon dioxide taken in
Oxygen given off
Produces glucose
Goes on only in light
Occurs only in the
presence of chlorophyll
Cellular Respiration
Food broken down
Energy of glucose released
Carbon dioxide given off
Oxygen taken in
Produces carbon dioxide and
water
Goes on day and night
Occurs in all living cells
Check It Out!




Did you notice
that cellular
respiration is just
the opposite of
photosynthesis?
Photosynthesis
Rap
Photosynthesis
Song
From a Seed’s
Perspective
Travelin’ Along with Transpiration Sheet
Travelin’ Along With
Transpiration Answers
I. 1. sun, transpiration, evaporate
2. stomata
3. absorbs, cools
4. roots and water
5. stem. Xylem vessels
II. 1. perspiration (sweat)
2. pores
3. meat/cheese/-bread
4. arteries and veins
5. vitamins and minerals
Transpiration
Brain Pop
http://www.brainpop.com/science/cellularlifeandgenetics/plantgrowth/
Think:
What is photosynthesis?
What are the needs of plants?
How do trees grow without being planted
by seeds?
What is hydroponics?
Why is photosynthesis important?
Do plants have genders?
Session 71 Warm Up:

Do green plants conduct photosynthesis
at nighttime? Why or Why not?

The most recent discovery of an earthlike planet by NASA’s Kepler Space
Telescope is said to be located in the
“Goldilocks Zone” in reference to its
distance from the sun. What do scientists
mean by the “Goldilocks Zone.”
Photosynthesis happens in the
daylight. Respiration happens at
night
Bill Nye Plants
http://youtu.be/VH3IFUDkGt8
Watch through 5:37

Without plants there would be no ________ on earth (including humans)

Plants make all the _________ we breathe and all the _________ we eat.

Plants take in ________ from the air and give off _________.

What does “photosynthesis” mean? ________________________.

What green pigment is the key to photosynthesis? ___________

So, plants take in _________ and give off ____________.

In the nifty home experiment, what were the bubbles the lettuce made?
Transpiration Animation
http://techalive.mtu.edu/meec/module01/Transpiration.htm
The U.S. EPA estimates that an acre of corn transpires 4000 gallons of water each day.
Transpiration
Transpiration—stoma are
small openings on the
underside of leaves which are
used for gas exchange, (O2 &
CO2). Guard cells on each
side help open & close stoma.
Plants also lose water through
the stoma. So, stoma are
usually closed during the
hottest part of the day so they
don’t lose so much water.
Plants only use about 10% of
the water they absorb from the
Earth. The rest is released
into the atmosphere through
transpiration.
Critical Thinking:
1.
Do you think plants would lose more water to
transpiration in windy conditions or non-windy
conditions?
2. Do you think plants would lose more water to
transpiration in humid conditions or dry
conditions? Why?
3. Explain how plant transpiration contributes to the
water cycle.
4. Where on Earth would you find the most
transpiration? Why? Do you think this has an
effect on climate?
5. What would be the effect if humans were to plant
a huge number of leafy trees in one county of
North Carolina. They would plant so many there
they would cover the land. Do you think
conditions there would be different? Why or why
not?
Session 72 Warm Up


Does Seaweed conduct photosynthesis?
Why or why not?
Do Carnivorous Plants conduct
photosynthesis? Why or why not?
Stations Review
Station 1: Photosynthesis Animation
Examples
Station 2: Transpiration
A.
B.
C.
D.
E.
F.
Stoma/ta on underside of leaves/leaves
Close stoma on underside of leaves using guard cells during the day.
See poster above, Temperature, Wind, Rain, Humidity
Underside of leaf/stoma
Slow down or even stop transpiration
Yes, it would increase it.
Station 3: Celery




1.
2.
3.
4.
Absorbed/sucked up water/changed colors
Red/Blue at top of celery stalk
Xylem Vessels(circulatory system)
Xylem vessels, process of transpiration
Station 4: Lettuce Stomata
1. Stoma
2.
3.
4.
5.
6.
Guard Cells
Daytime (photosynthesis
occurring)
Nighttime
CO2
O2 & H2O (Water Vapor)
Plants need CO2 to conduct
photosynthesis, they would
also not be able to release
water and die.
Leaf Anatomy
Leaves have epidermis with a waxy cuticle
and stomata to prevent water loss; guard cells
control the opening of the stomata
Compare/Contrast using a Triple
Venn Diagram the following
processes:
Photosynthesis, Transpiration,
Respiration.
A Segment from the
Private Life of Plants with David
Attenborough
Overview and Carnivorous Plants:
 https://www.youtube.com/watch?v=6uVTqjPT
fSE
 And Photosynthesis hogs/pollination masters:
Giant waterlilies in the Amazon
 https://www.youtube.com/watch?v=igkjcuw_n
_U
Time for a BrainPop
BrainPop Photosynthesis
 http://www.brainpop.com/science/cellularlifea
ndgenetics/photosynthesis/preview.weml
 Do Quiz Afterward
OR
BrainPop Carnivorous Plants
http://www.brainpop.com/science/diversityoflife/
carnivorousplants/preview.weml

Today’s Learning Goals

Transpiration(water loss through stomata) regulated by the guard cells
through their opining/closing

Leaves have epidermis with a waxy cuticle and stomata to prevent
water loss; guard cells control the opening of the stomata

In plants, chlorophyll (found in chloroplasts) captures energy from
the sun in order to make food during photosynthesis


Photosynthesis and cellular respiration are complementary processes:
Plants carry on photosynthesis/respiration where food is broken down
into energy
Plants make their own food through photosynthesis, animals consume
energy rich food