Activity Sheets - Photosynthesis S9LT-lg-j-31

Station 1: Identify Me!

Instructions: Observe the pictures below and read the information for each structure and
parts. After that, answer the guide questions given and label the parts correctly. Pass your
answers to your members in the next station. Go back to your seats after and review your
answers for the presentation. You may use your books for additional information.

Photosynthesis is the process by which plants, some bacteria and some protista
other autotrophic organisms make their own food. The presence of chlorophyll enables
these organisms to make their own food as it is thepigment in plants that power the
reaction of photosynthesis by absorbing light energy needed to make their own food.
Chloroplast contains the chlorophyll. Water enters the root and is transported up to the
leaves through specialized plant cells known as xylem vessels. While th phloem
distributes the food created from the leaves to the roots. Land plants must guard
against drying out and so have evolved specialized structures known as stomata or the
opening pores to allow gas to enter and leave the leaf. Carbon dioxide cannot pass
through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf
through the stoma (the singular of stomata), flanked by two guard cells. Likewise,
oxygen produced during photosynthesis can only pass out of the leaf through the
opened stomata. Unfortunately for the plant, while these gases are moving between
the inside and outside of the leaf, a great deal of water is also lost.The thylakoid is the
structural unit of photosynthesis. It is responsible for converting the light captured into
chemical energy in the form of ATP and NADPH. Both photosynthetic prokaryotes and
eukaryotes have these flattened sacs/vesicles containing photosynthetic chemicals.
Only eukaryotes have chloroplasts with a surrounding membrane. Thylakoids are
stacked like pancakes in stacks known collectively as grana. The areas between grana
are referred to as stroma. While the mitochondrion has two membrane systems, the
chloroplast has three, forming three compartments. The mesophyll spongy layer allows
the diffusion of carbon dioxide into the layer and diffusion of oxygen out of the layer.
Label the parts correctly and answer the questions Label the parts correctly and answer the questions
given. Pass your answers to your members in the next given. Pass your answers to your members in the next
station. You may write your answers on the back of this station. You may write your answers on the back of this
paper. paper.

1. List down all the structures/parts of a leaf contributing 1.List down all the structures/parts of a leaf contributing
to photosynthesis and write down their functions. to photosynthesis and write down their functions.

2. How does carbon and oxygen enter and exit the leaf? 2. How does carbon and oxygen enter and exit the leaf?

3. What is the importance of chloroplast? 3. What is the importance of chloroplast?

Label the parts correctly and answer the questions Label the parts correctly and answer the questions
given. Pass your answers to your members in the next given. Pass your answers to your members in the next
station. You may write your answers on the back of this station. You may write your answers on the back of this
paper. paper.

1. List down all the structures/parts of a leaf contributing 1. List down all the structures/parts of a leaf contributing
to photosynthesis and write down their functions. to photosynthesis and write down their functions.

2. How does carbon and oxygen enter and exit the leaf? 2. How does carbon and oxygen enter and exit the leaf?

3. What is the importance of chloroplast? 3. What is the importance of chloroplast?

 Activity Sheets - Photosynthesis S9LT-lg-j-31

Station 2: Classify Me!

Instructions: Use the answers from the last station as a guide in performing this
activity. Observe the pictures below and read the information. After that,
answer the guide questions given and list down what is being asked in the table
correctly. Pass your answers to your members in the next station. Go back to
your seats after and review your answers with your other members for the
presentation. You may use your books for additional information.

Photosynthesis is the process by which plants, some bacteria and

some protistans use the energy from sunlight to produce glucose from
carbon dioxide and water. This glucose can be converted into pyruvate
which releases adenosine triphosphate (ATP) by cellular respiration.
Oxygen is also formed. The conversion of usable sunlight energy into
chemical energy is associated with the action of the green pigment
chlorophyll. Chlorophyll is a complex molecule. Several modifications of
chlorophyll occur among plants and other photosynthetic organisms. All
photosynthetic organisms have chlorophyll. When chlorophyll a absorbs
light energy, an electron gains energy and is 'excited'. The excited electron
is transferred to another molecule (called a primary electron acceptor). The
chlorophyll molecule is oxidized (loss of electron) and has a positive charge.
Photoactivation of chlorophyll a results in the splitting of water molecules
and the transfer of energy to ATP and reduced nicotinamide adenine
dinucleotide phosphate (NADP).Photosynthesis may be summarised by the
word equation:
Complete the table and answer questions given. Complete the table and answer questions given.
Pass your answers to your members in the next Pass your answers to your members in the next
station. You may write your answers on the back station. You may write your answers on the back
of this paper. of this paper.

1. When does photosynthesis starts? 1. When does photosynthesis starts?

2. What are the necessary materials needed for 2. What are the necessary materials needed for
photosynthesis? photosynthesis?

3. What is the word equation to summarize 3. What is the word equation to summarize
photosynthesis? photosynthesis?

Complete the table and answer questions given. Complete the table and answer questions given.
Pass your answers to your members in the next Pass your answers to your members in the next
station. You may write your answers on the back station. You may write your answers on the back
of this paper. of this paper.

1. When does photosynthesis starts? 1. When does photosynthesis starts?

2. What are the necessary materials needed for 2. What are the necessary materials needed for
photosynthesis? photosynthesis?

3. What is the word equation to summarize 3. What is the word equation to summarize
photosynthesis? photosynthesis?
 Activity Sheets - Photosynthesis S9LT-lg-j-31

Station 3: Process Me!

Instructions: Use the answers from the last station as a guide in performing this activity.
Observe the pictures below and read the information. After that, answer the guide
questions given and complete the diagram. Pass your answers to your members in the next
station. Go back to your seats after and review your answers with your other members for
the presentation. You may use your books for additional information.

Photosynthesis is a two stage process. The light dependent reactions, a light-

dependent series of reactions which occur in the grana, and require the direct energy
of light to make energy-carrier molecules that are used in the second process:
• light energy is trapped by chlorophyll to make ATP (photophosphorylation)
• at the same time water is split into oxygen, hydrogen ions and free electrons:
2H2O 4H+ + O2 + 4e- (photolysis)
•the electrons then react with a carrier molecule nicotinamide adenine dinucleotide
phosphate (NADP), changing it from its oxidised state (NADP+) to its reduced state
(NADPH):
NADP+ + 2e- + 2H+ NADPH + H+
The light-independent reactions, a light-independent series of reactions which occur in
the stroma of the chloroplasts, when the products of the light reaction, ATP and
NADPH, are used to make carbohydrates from carbon dioxide (reduction); initially
glyceraldehyde 3-phosphate (a 3-carbon atom molecule) is formed.
The second stage is the Calvin cycle that converts carbon dioxide into sugar. This is
the chemical equation for photosynthesis.
Complete the diagram and answer questions given. Complete the diagram and answer questions given.
Pass your answers to your members in the next Pass your answers to your members in the next
station. You may write your answers on the back of station. You may write your answers on the back of
this paper. this paper.

1. What are the 2 stages of photosynthesis? 1. What are the 2 stages of photosynthesis?

2. What is the chemical equation for 2. What is the chemical equation for
photosynthesis? photosynthesis?

3. What are the products in the first stage of 3. What are the products in the first stage of
photosynthesis? How about the second stage? photosynthesis? How about the second stage?

Complete the diagram and answer questions given. Complete the diagram and answer questions given.
Pass your answers to your members in the next Pass your answers to your members in the next
station. You may write your answers on the back of station. You may write your answers on the back of
this paper. this paper.

1. What are the 2 stages of photosynthesis? 1. What are the 2 stages of photosynthesis?

2. What is the chemical equation for 2. What is the chemical equation for
photosynthesis? photosynthesis?

3. What are the products in the first stage of 3. What are the products in the first stage of
photosynthesis? How about the second stage? photosynthesis? How about the second stage?
 Activity Sheets - Photosynthesis S9LT-lg-j-31
Station 4: Finalizing!

Instructions:

Compile all the answers from the last stations as a guide in performing this activity. Once
you’ve answered all the questions, find your teacher and recite your answers.

1. The first group to finish and get all the correct answers will only present the
organelles/parts of the leaf necessary in photosynthesis by illustrating and stating its
functions.

2. The second group to finish and get all the correct answers will only present the raw
materials and products in photosynthesis by illustrating and explaining the process.

3. The third group to finish and get all the correct answers will only present the process of
photosynthesis by explaining the 2 stages involved and what are the materials and
products needed.

4. While the last group will need to act out the whole process of photosynthesis through
role playing.

Go back to your seats after and review your answers with your other members before the
presentation. You may use your books for additional information.
Once you finalized your answers, Once you finalized your answers,
recite your answers correctly to your recite your answers correctly to your
teacher without looking at your teacher without looking at your
papers papers

Question: Question:
1. Give at least 5 organelles/structures 1. Give at least 5 organelles/structures
necessary in photosynthesis and state necessary in photosynthesis and state
their functions. their functions.

2. What are the three components 2. What are the three components
needed for photosynthesis? needed for photosynthesis?

3. What are the products of 3. What are the products of

photosynthesis? photosynthesis?

4. What are the 2 stages of 4. What are the 2 stages of

photosynthesis? photosynthesis?

Once you finalized your answers, Once you finalized your answers,
recite your answers correctly to your recite your answers correctly to your
teacher without looking at your teacher without looking at your
papers papers

Question: Question:
1. Give at least 5 organelles/structures 1. Give at least 5 organelles/structures
necessary in photosynthesis and state necessary in photosynthesis and state
their functions. their functions.

2. What are the three components 2. What are the three components
needed for photosynthesis? needed for photosynthesis?

3. What are the products of 3. What are the products of

photosynthesis? photosynthesis?

4. What are the 2 stages of 4. What are the 2 stages of

photosynthesis? photosynthesis?