Photo synthesis science need to learn.pptx

PHOTOSYNTHESIS
This Photo by Unknown Author is licensed under CC BY-SA

OBJECTIVES
• At the end of the lesson, the students are
expected to:
• 1. Define Photosynthesis
• 2. Describe the organelles involved in
photosynthesis.
• 3. Identify the factors that affects
photosynthesis.

ELLICIT
• 1. What are the parts of
this plant?
• 2. Plants are great food
providers. Why do you
think they are called
great providers?

LEARNING ADVENTURE
• Activity 1
• What are the
structures involved
in the food making
process in plants?

LEARNING ADVENTURE
• Activity 1
• Each group will make
a summary of the
different concepts
they learned from
each learning station
which will be
presented to the
class.

LEARNING ADVENTURE
• Station 1
• Label the parts
of the internal
structure of a
leaf
The Structure of the leaf consist of Cuticle
which is the outermost layer of plants, which
covers leaves, A Palisade Layer Tightly
packed layer of cells beneath the cuticle and
upper epidermis of a leaf A Spongy Layer
comprised of irregularly-shaped cells and
temporally stores sugar, gases, and amino
acids. Air Space allow for carbon dioxide and
oxygen to move into and out of cells for
photosynthesis, Stomata microscopic pores
on leaf surfaces that facilitate gas exchange
with the atmosphere, and Veins which are
small channels or capillaries that transport

LEARNING ADVENTURE
• Station 2
• Label the parts of a
chloroplast
The chloroplast has an inner and
outer membrane with an empty
intermediate space in between. Inside
the chloroplast are stacks of
thylakoids, called grana, as well as
stroma, the dense fluid inside of the
chloroplast. These thylakoids contain
the chlorophyll that is necessary for
the plant to go through
photosynthesis. The lumen is a
continuous aqueous phase enclosed

LEARNING ADVENTURE
• Station 3
• Raw materials and End product of
photosynthesis

LEARNING ADVENTURE
• Station 4
• Understanding the process of food
making

PROCESS OF PHOTOSYNTHESIS
Light-Dependent Reactions
1. Light Absorption: Photosynthesis begins
with the absorption of light by chlorophyll and
other pigments in the chloroplasts of plant cells.
These pigments are primarily located in the
chloroplast's thylakoid membranes.

2. Water Splitting: During these reactions,
water molecules are split into oxygen (O₂) and
hydrogen ions (H⁺) using the energy from
sunlight.

3. Energy Molecules Formation: The energy
from the sun helps create two important energy
molecules, ATP and NADPH, which are like
batteries storing energy.

Light-Independent Reactions (Calvin Cycle)
4. Carbon Dioxide Uptake: In the second
stage, known as the light-independent reactions
or the Calvin Cycle (sometimes called dark
reactions), carbon dioxide (CO₂) is taken in
from the air through small openings in the
plant's leaves.

5. Glucose Production: With the help of the
energy stored in ATP and NADPH from the
light-dependent reactions, plants convert
carbon dioxide into glucose, a type of sugar that
serves as their food.

6. Oxygen Release: Oxygen is produced
during the light-dependent reactions but is
released as a byproduct during the light-
independent reactions.

EVALUATE
• PEN AND PAPER TEST
• Direction: Fill in the blanks.
Plants have green pigments called 1._____ stored in the
2._______. This pigment aids in capturing light energy from the
sun that enables plants to change into chemical energy in the food.
This process is called 3.________. Carbon dioxide + 4._______with
the help of sunlight and Chlorophyl produce 5.__________+
oxygen.

LETS DRAW
• Draw a flower on a 1 whole piece of paper.
• Continue by adding the sun, water, soil, and
rain.
• Write carbon dioxide and draw an arrow
towards the flower. On the opposite side,
write the word oxygen and draw another
arrow, but away from the flower this time.
• At the bottom of the plant, draw a sugar
cube.

ASSIGNMENT
• Research about the leaf stomata.
• Describe its function in photosynthesis.

Photo synthesis science need to learn.pptx

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