Setup B (No Light): Plant covered with a box to block sunlight. Watered and exposed to air.

Setup C (No CO₂): Plant sealed in a plastic bag without baking soda. Exposed to sunlight and watered.

Leave all setups for 48 hours.

After 48 hours, pluck one leaf from each plant.

Boil each leaf in water for 2 minutes.

Soak each leaf in alcohol to remove chlorophyll.

Rinse in warm water.

Add iodine solution to each leaf.

Observe color change.

Transparent plastic bags

Cardboard box (to block light)

Water

Sodium bicarbonate (baking soda – CO₂ source)

Iodine solution

Alcohol

Beaker

Stove or hot water bath

Labels and marker

Timer

Camera or phone (for MOVs/pictures)

|-------|-------|-----|--------|---------|--------|

| A | ✅ | ✅ | ✅ | ✅ | Blue-black |

| B | ❌ | ✅ | ✅ | ❌ | Yellow-brown|

| C | ✅ | ❌ | ✅ | ❌ | Yellow-brown|

Setup B lacked light, and no starch was formed—light is essential.

Setup C lacked carbon dioxide, and no starch was formed—CO₂ is essential.

All setups had water, but without light or CO₂, photosynthesis did not occur.

Grade & Section: 08-A

Date: 08/17/2025

Investigation: Verifying the Raw Materials Needed for Photosynthesis

I. Materials Used

2 healthy green plants (same kind)

Opaque material (black paper/aluminum foil) to cover part of the leaf

Beaker with water

Dropper

Test tube with water

Source of carbon dioxide (ex: blowing air into water or using sodium bicarbonate solution)

Iodine solution (to test for starch)

Alcohol (ethanol)

Hot water bath (beaker with hot water)

Forceps

Petri dish or white tile

Grade & Section: 08-A

Date: 08/17/2025

II. Methods

1. Select two healthy plants and place one in sunlight and one in darkness for 24 hours (to de-starch the leaves).

2. On the sunlight plant, cover part of a leaf with black paper to block light.

3. After 24 hours, detach the leaves to be tested.

4. Boil the leaf in water for 2 minutes to soften it.

5. Soak the leaf in alcohol placed in hot water until it becomes pale (removes chlorophyll).

6. Rinse the leaf in warm water to soften.

7. Place the leaf on a white tile and add iodine solution.

8. Observe the color change.

Blue-black = starch is present (photosynthesis happened).

Brown/yellow = no s

tarch (no photosynthesis).

Grade & Section: 08-A

Date: 08/17/2025

III. Data/Results

Leaf exposed to sunlight → turned blue-black with iodine (starch present).

Covered leaf (no light) → remained brown/yellow (no starch).

Plant kept in darkness → no starch detected.

Leaf without CO₂ → no starch formed

Grade & Section: 08 - A

Date: 08/17/2025

IV. Analysis

Photosynthesis requires sunlight, carbon dioxide, and chlorophyll.

The covered parts of the leaf (no light) showed no starch, proving light is necessary.

The leaf kept in darkness or without CO₂ showed no starch, confirming both are n

eeded.

Grade & Section: 08 - A

Date: 08/17/2025

V. Conclusion/Generalization

In conclusion, the investigation proves that the raw materials for photosynthesis are carbon dioxide, water, sunlight, and chlorophyll. Without any of these, plants cannot produce food (starch).

- Carton

-Camera/Phone(to take pictures)

8-C

(cleaning group members Tuesday)

Joyce S. Javier

Kaitlyn Aleli

Rose Marie Bacala

Carl Andrew Fortaliza

Kyle Gallardo

June Florenz Montajes

Photosynthesis and Light

- Light is essential: Plants need light to perform photosynthesis, the process by which they convert light energy into chemical energy (sugars) to fuel their growth.

- Chlorophyll's Role: Chlorophyll, the green pigment in plants, captures light energy. When a plant is deprived of light, it stops producing chlorophyll, resulting in the pale or yellow appearance.

Etiolation: The Plant's Response to Darkness

- Survival Mechanism: Etiolation is a survival mechanism. The plant elongates its stem rapidly to try and reach a light source.

- Resource Allocation: The plant prioritizes stem growth over leaf development, resulting in a weak, elongated structure. It's essentially using its stored energy reserves in a desperate attempt to find light.

Impact on Plant Health

- Energy Depletion: Without light, the plant can't replenish its energy stores through photosynthesis. It starts consuming its reserves, weakening the plant.

- Long-Term Consequences: If the plant remains covered for an extended period, it will eventually run out of energy and die.

Real-World Examples

- Potatoes in Storage: Potatoes that are not stored in dark conditions will turn green (due to chlorophyll production) and may sprout long, pale shoots (etiolation).

- Sprouts Under Rocks: You might find pale, elongated plant sprouts under rocks or other objects in your garden.

8-C

(cleaning group members Tuesday)

Joyce S. Javier

Kaitlyn Aleli

Rose Marie Bacala

Carl Andrew Fortaliza

Kyle Gallardo

June Florenz Montajes

Joyce S. Javier 8-C

3 healthy potted plants (same species)

-Transparent plastic bags

-Cardboard box (to block light)

-Water

-Sodium bicarbonate (baking soda – CO₂ source)

-Iodine solution

-Alcohol (ethanol)

-Beaker

-Stove or hot water bath

-Labels and marker

-Timer

Lhian Mae C. Lucin

Gr. 8-C

1. Preparation

•Choose 3 healthy potted plants of the same species.

•Label them Plant A, Plant B, and Plant C.

•Keep them in a dark place for 12–24 hours to remove stored starch (so results will be clearer)

2. Setting Up the Treatments

- Plant A – With light + CO₂ (experimental):

•Place the plant in bright light (sunlight or lamp).

•Put a small cup with water + baking soda (CO₂ source) inside a transparent plastic bag.

•Cover the plant loosely with the bag.

- Plant B – Without light (light control)

•Place the plant inside a cardboard box to block light.

•Put a cup of plain water inside the bag.

•Cover the plant the same way as Plant A.

- Plant C – With light, no added CO₂ (CO₂ control):

•Place in the same light as Plant A.

•Put a cup of plain water inside a plastic bag.

•Cover the plant loosely.

3. EXPERIMENT

•Leave the plants in their respective setups for 6–24 hours.

•Use a timer to track exposure.

•Take photos or short videos (optional, as proof).

4. Testing the Leaves for Starch

• After exposure, pick one mature leaf from each plant and label them A, B, and C.

• Boil each leaf in water (1–2 min) to soften.

• Transfer leaves into hot alcohol (in a beaker placed in a hot water bath) until leaves become pale/whitish.

•Rinse the leaves briefly in warm water to soften them.

•Spread each leaf on a white dish and cover with iodine solution.

5. Observation

-Record the color change:

•Blue-black = starch present (photosynthesis occurred).

•Yellow-brown = no starch (no photosynthesis).

6. Expected Results

•Plant A (Light + CO₂): Blue-black (starch present).

•Plant B (Dark): Yellow-brown (no starch).

•Plant C (Light only, no added CO₂): May show some blue-black, but weaker than A.

Lhian Mae C. Lucin

Gr. 8-C

•PLANT CONDITION

A - light + CO₂ (with baking soda)

B - no light (inside box)

C - light only ( no extra CO₂)

•IODINE TEST RESULT

-leaf turned  blue - black

- leaf remained yellow - brown

- leaf showed pale blue -  black patches 

In the experiment, the three plants showed different results after being tested with iodine solution.

• Plant A, which was exposed to light and supplied with extra carbon dioxide from baking soda, turned dark blue-black, indicating the presence of starch. This means that photosynthesis took place actively under these conditions. 

•Plant B, which was kept in complete darkness inside a box, did not change color and remained yellow-brown, showing that no starch was produced because light was absent. 

•Plant C, which was placed in light but without extra carbon dioxide, turned only partly blue-black with lighter or patchy areas. This suggests that some photosynthesis occurred using the carbon dioxide naturally present in the air, but the starch production was less compared to Plant A.

• Overall, the results demonstrate that light and carbon dioxide are both important raw materials required for photosynthesis, and their absence or limitation reduces or prevents starch formation in leaves.

Lhian Mae C. Lucin

Gr. 8-C

ANALYSIS 

Plant A, which was given light and an additional source of CO₂, showed a strong blue-black color after iodine test. This indicates a high amount of starch was formed, proving that both light and carbon dioxide are necessary for photosynthesis.

Plant B, which was kept in the dark, showed no starch production. This proves that light is essential for photosynthesis.

Plant C, which was exposed to light but no extra CO₂, produced less starch compared to Plant A. This shows that while light was available, the limited amount of CO₂ restricted starch formation.

Lhian Mae C. Lucin

Gr. 8-C

The experiment verified that photosynthesis requires both light and carbon dioxide as raw materials. The leaf exposed to light with extra CO₂ produced the most starch, while the leaf kept in darkness produced none. This shows that without light or sufficient CO₂, photosynthesis cannot occur effectively, confirming that light, carbon dioxide, and water are essential for plants to make food.

Lhian Mae C. Lucin

Gr. 8-C

Gr&Section:8-A

Date:08/17/25

Raw Materials Needed for Photosynthesis

I. Materials Used

Potted green plant

Black paper/foil

Beaker with water

Alcohol (ethanol)

Iodine solution

Source of light (sunlight or lamp)

Gr&Section:8-A

Date:08/17/25

II. Methods

Cover part of a leaf with black paper/foil.

Expose the plant to sunlight for a few hours.

Boil the leaf in water, then in alcohol to remove its green color.

Rinse, then put iodine solution on the leaf.

Observe the changes in color.

Gr&Section:8-A

Date:08/17/25

III. Data/Results

Parts of the leaf that got light → turned blue-black (starch present).

Parts covered with foil → stayed yellow-brown (no starch).

Gr&Section:8-A

Date:08/17/25

IV. Analysis

Only the leaf parts with light produced starch.

This shows that light, water, and carbon dioxide are needed for photosynthesis.

Gr&Section:8-A

Date:08/17/25

Raw Materials Needed for Photosynthesis

V. Conclusion/Generalization

Photosynthesis cannot happen without:

Light

Water

Carbon dioxide

Chlorophyll (green pigment in leaves)

Gr&Section:8-A

Date:08/17/25

Raw Materials Needed for Photosynthesis

V. Conclusion/Generalization

Photosynthesis cannot happen without:

Light

Water

Carbon dioxide

Chlorophyll (green pigment in leaves)

Gr. 8- C

Gr and Section: 8-A

Materials Used:

• Two healthy potted plants of the same kind

• Water

• Black paper/foil and tape

• Transparent plastic bag

• Sunlight

Gr and Section: 8-A

Method used:

Two plants of the same kind were prepared. One plant was placed under sunlight and watered regularly. A portion of a leaf from the second plant was covered with black paper to block sunlight. Another plant was placed inside a transparent plastic bag to limit air circulation. Observations were made for several days to note the changes.

Gr and Section: 8-A

Data: The plant that received sunlight and water stayed green and healthy after several days. The leaf that was partly covered with black paper showed a yellow color on the covered part, while the exposed part remained green. The plant placed inside a plastic bag with limited air became pale and weak, and its growth was slower compared to the plant with enough air and sunlight. Meanwhile, the plant that was not watered began to droop and its leaves slowly dried out.

Gr and Section: 8-A

Analysis:

The results showed that plants need sunlight, air (carbon dioxide), and water for photosynthesis. Without these, their leaves change color, and their growth slows down.

Gr and Section: 8-A

Conclusion:

It can be concluded that the raw materials needed for photosynthesis are sunlight, water, carbon dioxide, and chlorophyll. These are essential for plants to make their own food and remain healthy.

•Fresh green leaves (like from hibiscus, spinach, or any broadleaf plant)

•Beaker or glass jar

•Test tubes

•Dropper

•Alcohol (ethanol)

•Iodine solution (to test starch)

•Hot water (for heating alcohol and softening leaves)

•Beaker with boiling water (for leaf blanching)

•Forceps or tweezers

•Petri dish or small plate

•Sunlight (natural light source)

•Black paper/aluminum foil (to cover part of the leaf for testing light requirement)

Cindy C. Uy

Gr. 8- C

1. Test for Light Requirement

•Take a healthy potted plant and keep it in complete darkness for about 24–48 hours (to remove stored starch in the leaves).

•Cover part of one leaf with black paper/aluminum foil, leaving the other part exposed to sunlight.

•Place the plant under sunlight for a few hours.

•Pluck the covered leaf, boil it in hot water for 1–2 minutes (to soften).

•Transfer it into hot alcohol (in a beaker placed in hot water) to remove chlorophyll (leaf turns pale).

•Rinse the leaf in warm water and spread it on a plate.

•Add iodine solution.

•Observation: The exposed part turns blue-black (starch present), while the covered part does not.

•Conclusion: Light is necessary for photosynthesis.

2. Test for Carbon Dioxide Requirement

•Take two potted plants of the same type and destarch them by keeping in the dark for 24–48 hours.

•Place one plant in a bell jar with a dish containing potassium hydroxide (KOH) or soda lime (which absorbs CO₂).

•Place the other plant in a normal bell jar without KOH.

•Expose both plants to sunlight for several hours.

•Test one leaf from each plant using the iodine test.

•Observation: The leaf from the plant without CO₂ does not turn blue-black, while the normal plant does.

•Conclusion: Carbon dioxide is necessary for photosynthesis.

3. Test for Chlorophyll Requirement

•Use a variegated leaf (a leaf with both green and white/yellow parts).

•Destarch the plant by keeping it in darkness for 24 hours.

•Expose it to sunlight for a few hours.

•Pluck the variegated leaf and perform the iodine test.

•Observation: Only the green areas turn blue-black.

•Conclusion: Chlorophyll is necessary for photosynthesis

Cindy C. Uy

Gr. 8- C

1. Light Requirement Test

•Exposed part of the leaf (to sunlight) → turned blue-black with iodine.

•Covered part (no light) → stayed brown/yellow (no starch).

2. Carbon Dioxide Requirement Test

•Leaf from plant in normal air (with CO₂) → turned blue-black.

•Leaf from plant in bell jar with KOH (no CO₂) → stayed brown/yellow.

3. Chlorophyll Requirement Test

•Green part of variegated leaf → turned blue-black.

•White/yellow part (no chlorophyll) → stayed brown/yellow.

Test

• Light requirements

• Carbon dioxide requirements

• Chlorophyll requirements

Condition Tested

•Leaf partly covered

•Plant with CO₂ vc without CO₂

•Variegated leaf

Observation with Iodine

• Expose part - blue & black

Covered part - no change

•With CO₂ - blue & black

Without CO₂ - no change

•Green parts - blue & black

White parts - no change

Cindy C. Uy

Gr. 8-C

In the light requirement test, only the part of the leaf exposed to sunlight turned blue-black with iodine. This shows that starch (a product of photosynthesis) was only produced where light was available. The covered part did not photosynthesize.

→ Therefore, light is essential for photosynthesis.

In the carbon dioxide test, the plant given normal air formed starch (leaf turned blue-black), while the plant without CO₂ did not.

→ This proves that carbon dioxide is a raw material required for photosynthesis.

In the chlorophyll test, only the green areas of the variegated leaf tested positive for starch. The non-green parts did not.

→ This shows that chlorophyll is necessary for capturing light energy to carry out photosynthesis

Cindy C. Uy

Gr. 8-C

The investigation proved that photosynthesis requires specific raw materials. Only the leaf parts exposed to light, supplied with carbon dioxide, and containing chlorophyll were able to produce starch, as shown by the blue-black color with iodine. Therefore, we conclude that light, carbon dioxide, water, and chlorophyll are essential for photosynthesis. Without any of these materials, photosynthesis cannot occur. 

Cindy C. Uy

Gr. 8-C

Gr. 8-C

I. Materials Used

- Variegated leaf

- Beaker

- Water

- Alcohol (Ethanol)

- Test tube

- Bunsen burner or hot plate

- Iodine solution

- Petri dish

- Forceps

- Dropper

Gr. 8-C

II. Methods

Boiling the Leaf:

- Boil the variegated leaf in water for about 2 minutes. This softens the leaf and breaks down cell membranes.

- Place the leaf in a beaker containing alcohol (ethanol).

Removing Chlorophyll:

- Heat the alcohol using a water bath (place the beaker in hot water) until the leaf decolorizes, removing chlorophyll. The alcohol will turn green as chlorophyll dissolves.

- Rinse the leaf with hot water to remove any remaining chlorophyll.

Testing for Starch:

- Place the decolorized leaf in a Petri dish.

- Add iodine solution to the leaf and observe any color changes.

Gr. 8-C

III. Data/Results

Leaf Area Observation After Iodine Test

Green Patch Blue-black color

Pale Yellow Patch Brown color

Gr. 8-C

IV. Analysis

- Green Patch (Chlorophyll Present): The area of the leaf that was originally green turned blue-black after adding iodine solution. This indicates the presence of starch, which is produced during photosynthesis.

- Pale Yellow Patch (Lacks Chlorophyll): The area of the leaf that was originally pale yellow remained brown after adding iodine solution. This indicates the absence of starch, suggesting that photosynthesis did not occur in this region due to the lack of chlorophyll.

Gr. 8-C

V. Conclusion

The experiment demonstrates that chlorophyll is necessary for photosynthesis. The green parts of the variegated leaf, which contain chlorophyll, produced starch when exposed to light, as confirmed by the blue-black color change upon the addition of iodine. In contrast, the pale yellow parts, lacking chlorophyll, did not produce starch and remained brown after the iodine test. This confirms that chlorophyll plays a crucial role in the production of starch through photosynthesis.

Grade & Section: 08 - A

Date: 08/17/2025

1. Prepare three healthy potted plants of the same kind in separate pots.

2. Label them as:

Plant 1: Sunlight + Water

Plant 2: Sunlight + No Water

Plant 3: Water + No Sunlight

3. Place Plant 1 outdoors where it receives sunlight daily and water it regularly.

4. Place Plant 2 outdoors in sunlight but do not give it water (keep the soil dry).

5. Place Plant 3 in a shaded/dark area with no sunlight but give it water regularly.

6. Observe and record changes in growth, leaf color, and overall

health for several days.

Plant 1 (Sunlight + Water): Healthy, green, and growing well.

Plant 2 (Sunlight + No Water): Wilts after a few days, leaves curl and soil becomes dry.

Plant 3 (Water + No Sunlight): Remains weak and pale, leaves turn yellowish, little or no growth.

In conclusion the experiment shows that healthy plants need both water and sunlight to stay strong and perform photosynthesis. If either is missing, the plant becomes weak, wilted, or fails to grow. Therefore, sunlight and water are essential raw materials for photosynthes

is.

Photosynthesis requires both sunlight and water as raw materials.

Plant 1 showed the best growth because it had the complete requirements.

Plant 2 had sunlight but lacked water, so it could not carry out photosynthesis properly and wilted.

Plant 3 had water but no sunlight, so it could not make food through photosynthesis and became weak.

This proves that both water and sunlight are necessary for photosynthesis and plant

survival.

8-A

08/17/25

I. Materials Used

-Potted green plant (any house plant, e.g. kamote leaves, malunggay, or any leafy plant)

-Transparent plastic bag

-Small glass of water

-Rubber band or thread

-Sunlight

8-A

08/17/25

II. Methods

1. Take a healthy leaf from the plant (still attached to the stem).

2. Wrap the leaf tightly with a transparent plastic bag and seal it using a rubber band.

3. Place the plant under sunlight for a few hours.

4. After some time, observe the inside of the plastic bag.

8-A

08/17/25

III. Data/Results

Water droplets (moisture) appear inside the plastic bag.

8-A

08/17/25

IV. Analysis

The water droplets came from water vapor released by the leaf during transpiration.

This shows that plants use water and release oxygen and water vapor during photosynthesis.

Since it only happened under sunlight, this proves that sunlight is also necessary.

8-A

08/17/25

V. Conclusion/Generalization

The experiment shows that plants need sunlight and water for photosynthesis.

The moisture inside the bag is evidence that the plant used water in the process and released it as vapor.

✓Water(H²O)

✓Wood Box/Cardboard box (to cover the plant from sunlight)

✓Phone (for searching importance's and information)

✓Plastic bags (to cover the plant from carbon dioxide)

✓Timer/ Days-count

✓Hot Water/Boiled Water

✓Iodine Solution

•Princess Ashley S. Prieto

•Gr. 8 -A (STE)

(CONTROL)

Plant B: This plant is blocked by a plastic bag; unable of carbon dioxide to enter the plant, but have the care of water and sunlight it needed.

Plant C: This plant is covered by a wood box from every angle; unable of sunlight from the plant.

•Princess Ashley S. Prieto

•Gr. 8 -A (STE)

Plant A show us that photosynthesis requires complete sunlight, water, and carbon dioxide. Moreover, it was image that even one element of requirements to photosynthesis is missing, photosynthesis will likely not be successful because Plant B and Plant C was showing us that even just sunlight or carbon dioxide is missing from a plant, the absences of the element has a very big impact of failure to the process of photosynthesis. Bow the question is "How can I be sure that what I'm stating right now is true?" - well, you can try this experimentation 'starch test's. This test verify the plant if the photosynthesis is successful in a presence of starch.

•Princess Ashley S. Prieto

•Gr. 8 -A (STE)

In conclusion, water, carbon dioxide, and sunlight is necessary for photosynthesis process. Any of the materials might have absence in a plant cannot require the succession of photosynthesis.

•Princess Ashley S. Prieto

•Gr. 8 -A (STE)

-Black Paper/Aluminum Foil

-Two Healthy Potted Snake Plants

-One Cup of Water

-Sunlight

-Notebook/Data Book (For Gathering Information and Data)

Members:

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

1.       Plant A (for sunlight test)

                Take one snake plant.

               Cover part of one of it’s leaves with aluminum foil, leaving the rest uncovered.

               Place it under sunlight for a few hours

2.       Plant B (for water test)

Take another snake plant

Water one of its leaves/soils generously.

Do not water the other plant for the same period.

Observe how each one looks after a few hours.

Members:

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

Plant A (sunlight test): The covered part of the leaf looked pale compared to the uncovered part, which stayed green.

Plant B (water test): The watered plant looked fresh and green, while the unwatered plant looked weaker/dull.

Members:

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

The experiment shows that snake plants need sunlight and water for photosynthesis. The leaf that was covered with foil could not do photosynthesis, while the unwatered plant showed signs of stress, proving water is also important.

Members:

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

Photosynthesis in snake plants requires sunlight, water, and carbon dioxide. Without these raw materials, the plant cannot make it’s own food and will not survive.

Members:

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

Chrislaine John Ponce

Juliana Conato

Angelo Custodio

Mae Cua

Carmelle Lamberte

Honey Abando

Yna Tan

-Aluminum foil

-Clips

-Lodine solution

-Water bath

-Droppers

-Light source

-Select several leaves from your potted plant.

-Cover a part of each selected leaf with aluminum foil or black paper using clips.

-Expose the plant to light.

-After the exposure pariod, remove the foil or paper.

-Boil the leaves in water for about 2 minutes to stop enzymatic activity.

-Palce the boiled leaves in a test tube with ethyl alcohol and heat in a water bath until the leaves lose their color.

-Rinse the decolorized leaves with distilled water and place them in separate parit dishes.

-Add a few drops of lodine solution to each leaf and observe the color change.

-Record your observations, noting witch parts of the leaf turned blue-black (indicating the presence of starch) and witch did not.

Experiment:

LIGHT

Leaf of Condition:

EXPOSED TO LIGHT

Part of leaf:

UNCOVERED

Observation After lodine Test:

THE AREA EXPOSED TO LIGHT TURNED BLUE-BLACK, INDICATING THE PRESENCE OF STARCH

Inference:

LIGHT IS NECESSARY FOR PHOTOSYNTHESIS TO PRODUCE STARCH

________________________________________________

Experiment:

LIGHT

Leaf Condition:

COVERED WITH FOIL OR PAPER

Part of leaf:

COVERED

Observation After lodine Test:

THE COVERED AREA DID NOT TURN BLUE-BLACK, INDICATING NO STARCH PRODUCTION

Inference:

PHOTOSYNTHESIS DID NOT OCCUR IN THE ABSENCE OF LIGHT

•In the light experiment,the part of the leaves exposed to light turned blue-black when lodine solution was added.This indicates the presence of starch,witch is produced during photosynthesis. The parts of the leaves covered with foil did not show this color change, indicating that light is essential for photosynthesis.

•The experiments confirm that light are essential raw materials for photosynthesis without these, plants cannot produce starch (a form of glovose).

Jimuel Sumaya

Glenda Basco

Maryeh Dalanon

Melanie Buyan

Samuel Gemeniz

Vanrick Aves

We saw that the plant that was given water remain the same as it was before while the other was dry but a little bit wilted also looked like it remained the same appearance as the other day.

Members:

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

•2 potted plants (same species)

•Water

•Sunlight

•Soil

•Camera

•A bunch of papers to write the results and a ballpen

Members:

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

We placed two potted plants in an open space, watering only one of them while leaving the other without water. After 3 days, we observed and recorded the results.

Members:

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

Our method showed that a plant can dry up when not given water for three days. It also suggests that the plant did not undergo photosynthesis, as it lacked the necessary resources to produce food. As a result, it appeared wilted and weak due to energy loss.

Members:

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

We concluded that water is essential for photosynthesis, as it enables the plant to produce food for energy. Based on our results, the plant that was not given water appeared dry and slightly wilted after three days, indicating a loss of energy due to the lack of food production.

Members:

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

Ma. Franchezka V. Balansag

Clydeine B. Beloy

Mencee Baragenio

Ashley Prieto

Trisha Emboy

Marco Selencio

Jan Dion Ordavisa

Iodine solution (betadine)

Ethyl alcohol

Test tube

Water

Soil

Sunlight

8- A

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

We plucked a leaf from Plant A and used it to test whether it has starch present in it or not. 1) We put in on a hot boiling water to soften the leaf and kill the bacteria. 2) Placed the softened leaf unto the test tube filled with ethyl alcohol, and let it boiled to get the chlorophyll present inside the leaf. 3) Placed the leaf unto a clean bowl and poured iodine solution (betadine) to see if it changes color.

8- A

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

8- A

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

8- A

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

8- A

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

GROUP 5 MEMBERS:

Mary Christine Tero

Niel Sigmund Ponce

Niño Kieth Flores

Sophia Flor Cutamura

Alfhe Jade Omandam

Chelsea Lian Montilla

Kris Oli Adesna

2.After a few minutes (or days ),

Take away the covered plant and look for the difference between the two plants

8-C

(cleaning group members Tuesday)

Joyce S. Javier

Kaitlyn Aleli

Rose Marie Bacala

Carl Andrew Fortaliza

Kyle Gallardo

June Florenz Montajes

A Few Minutes

- No significant change: A few minutes of darkness won't cause any noticeable changes to the plant.

A Few Days

- Etiolation: This is the process where a plant grows abnormally in the absence of light.

- Pale or Yellow Leaves: Due to the lack of chlorophyll production.

- Elongated Stems: The plant stretches in search of light.

- Weak Structure: The plant's stem becomes thin and weak because it's not producing enough structural compounds.

- Reduced Photosynthesis: The plant's ability to produce energy is significantly reduced.

- Stunted Growth: Overall growth slows down or stops.

- Increased Respiration: The plant consumes its stored energy reserves more quickly.

8-C

(cleaning group members Tuesday)

Joyce S. Javier

Kaitlyn Aleli

Rose Marie Bacala

Carl Andrew Fortaliza

Kyle Gallardo

June Florenz Montajes

(cleaning group members Tuesday)

Joyce S. Javier

Kaitlyn Aleli

Rose Marie Bacala

Carl Andrew Fortaliza

Kyle Gallardo

June Florenz Montajes