Transcript Intro to Photosynthesis PowerPoint (Ms. Gardner)

Flabby Whalefish
Blob Fish
Hydrothermal Vent
Tongue Fish
Bacteria that live near
hydrothermal vents
Tubeworm that lives near
the hydrothermal vent
• Tubeworm with a symbiotic relationship with
bacteria
Nutrition!
What is nutrition??
How organisms obtain and
process food!
Life function!
What is nutrition needed
for?
•
•
•
•
1.
2.
3.
4.
energy
growth
repair
regulation
Two types of nutrition!
• Autotrophic nutrition• When an organism can
manufacture organic compounds
from inorganic raw materials.
• AUTOTROPH=ORGANISM THAT
CAN MAKE IT’S OWN FOOD.
• EX. PLANTS, ALGAE
Continue…
• Heterotrophic nutrition – the
organism that cannot make
organic compounds from
inorganic raw materials
• HETEROTROPHS = organisms
that can NOT make their own
food.
Nutrition in Plants!
• How do plants get their nutrition???
• PHOTOSYNTHESIS!!!!
• What is that???
• This is the process plants use in
order to make their own food!!!
Therefore, they are autotrophs!!
What do plants need for
photosynthesis?
• Plants need:
• Sunlight
• Water
• Carbon dioxide
• Photosynthesis is the process by
which the energy of light is
converted to the chemical bond
energy of organic compounds
Basic Photosynthesis!
• Are all the raw materials
present?
Photosynthesis occurs in
two parts!
• 1. Light reaction (photochemical
rxn.)
• Occurs in the grana of the chloroplast
• 2. Dark Reaction (carbon fixation)
• Occurs in the stroma of the chloroplast
Another view of
Photosynthesis
• Does the dark reaction require
the direct sunlight?
Photosynthesis occurs
in the chloroplast
• Can you
recognize any
of the parts?
• Can you
locate the
stroma and
grana?
Chloroplasts are
located in the leaf
Continue…
Vascular Plants - although some
photosynthesis occurs in the stems of
vascular plants, the organs most highly
adapted for this process are the LEAVES
cuticle (waxy layer)
upper epidermis
stomates
guard cells
pallisade layer
spongy layer
lower epidermis
chloroplasts
xylem
phloem
fibrovascular bundle
What is this?
• Guess?
This is what a leaf looks
like under the microscope
• Can you identify the parts?
Can you identify all the
parts of the leaf?
• ??
Photosynthesis
occurs in the . . .
1. Palisade layer
2. Spongy layer
3. Guard cells
General formula for
Photosynthesis
•
6CO2 + 6H2O  C6H12O6 + 6O2
• Carbon dioxide + water  glucose + oxygen
Do you recognize the
process?
• What is given off?
• What is made?
Can you explain what is
happening?
• Do you see the two reactions?
Another Hydrothermal
vent!!
•!