STUDENT WORKSHEET 1
A. Topic
Look closely at the leaf anatomy
B. Objectives
1. To identify the parts of plant that has function in photosyntesis process
2. To explain the function of leaf parts that has function in photosyntesis process
3. To explain the photosynthesis process in plant
C. Instruments and Materials
1. Pen and paper
2. Microscope
3. Dry preparate of anatomy leaf (Ficus elastica)
D. Procedure
1. Take a dry preparate of leaf anatomy (Ficus elastica)
2. Prepare the microscope and find the focus of light
3. Place the dry preparate of leaf anatomy on the stage
4. Look closely at the dry preparate of leaf anatomy (Ficus elastica) under
Microscope
a. Observe the dry preparate of leaf anatomy by low power of lens
b. And than observe the dry preparate of leaf anatomy by middle power of
lens
5. Draw and determine the leaf anatomy parts
6. Answer the discussion questions
E. Questions
b. Based on the picture above, what number is the happening place of
photosynthesis process? No. 2 and no 3
2. a. Where is the chlorophyll location and what is the function? No. 2 and 3
for getting sun light
b. What is the function of part by 6 label on the picture above? As the place of gas exchange
3. a. Mention the partr of chloroplast structure below!
b. what meaning of grana & stroma?
b. what meaning of grana & stroma?
| |
| |
4. Where is happening:
a. Dark reaction and explain the process!
b. Light reaction and explain the process!
STUDENT WORKSHEET 4
A. Topic
Light influence on the rate of photosynthesis process
B. Objective
1. To know light intensity influence on the rate of photosynthesis process
C. Instruments and Materials
a. Instruments
1. Beaker glass 1 litre
2. Paper clip
3. Lamp
4. Ruler
b. Materials
1. Hydrilla sp.
2. Water
D. Procedure
1. Prepare a bunch of Hydrilla sp. 4 or 5 branches
2. Fill the beaker glass with water
3. Enter Hydrilla sp to the beaker glass, hold the tip by paper clip, Make sure that all of the Hydrilla sp plant is soaked in the water
4. Turn on the lamp and place in the certain distance (measure by ruler)
(10 cm, 20 cm, 30 cm and 40 cm)
5. Observe the air bubble total that released by Hidrilla sp every minute
6. Write your observation result on the data table below.
Data of air bubble total that released
No.
|
Distance
|
Minute
|
Average
|
Explanation
| ||
1
|
2
|
3
| ||||
1
|
10 cm
|
20
|
21
|
25
|
22
| |
2
|
20 cm
| |||||
3
|
30 cm
| |||||
4
|
40 cm
|
12
|
14
|
10
|
12
| |
E. Questions
1. Which one of distance produces more many air bubbles? 10 cm
2. Where do air bubbles come from? From oxygen that release by water plant
3. What is the aim of the lamp placed in the certain distance?
4. What is the conclusion that you get from this activity?
Group :
Members of group :
1…………………………..
2…………………………..
3…………………………..
4…………………………..
STUDENT WORKSHEET 3
A. Topic
Amylum as product of photosynthesis
B.Objective
1. To prove that photosynthesis produces amylum
C. Instruments and Materials
1) Pen and paper
2) Beaker glass
3) Set of bunsen burner
4) Reaction tube
5) Alcohol
6) Iodine solution
7) Water
8) A piece of leaf from plant that have been illuminated by sunlight
9) A piece of leaf from plant that have not been illuminated by sunlight
D. Procedure
You can do the simple experiment, to prove that in photosynthesis process be produced amylum. Do the steps below:
1. Take a piece of leaf that have been illuminated by sunlight
2. Enter the leaf to the beaker glass that have been filled by water and boil it during some minutes until really withered
|
3. Take the leaf that have been boiled and enter to the reaction tube that have
been filled alcohol. Make sure that all of leaf part soaked in alcohol
4. Enter the reaction tube that have been filled alcohol to the beaker glass and
heat it
|
5. If the colour of leaf has been pale, take the reaction tube from the beaker
glass
6. Carefully, move the leaf to the hot water for softening the leaf
7. Take the leaf on the filtering paper in the petri disc
8. Drip iodine solution on leaf and observe their colour.
9. In the same way, repeat these steps (2-8) toward a piece of leaf that have not been illuminated by sunlight.
Observe and write all of observation result on the data table below!
Treatment toward leaf
|
Leaf colour before driped with iodin solution
|
Leaf colour after driped with iodin solution
|
Leaf illuminated
|
Pale (pucat)
|
Dark Blue (biru tua)
|
Leaf isn’t illuminated
|
Pale (pucat)
|
Pale (pucat)
|
E. Questions
1) After you observe these experiment, what are the differences from both of leaves? The colour of leaf illuminated is dark blue and colour of leaf is not illuminated is pale
2) In these experiment, why are the leaf that will be exam must be boiled?
To break the cell wall of plant (leaf)
3) After the leaf soaked in alcohol, alcohol canged to green colour. Why?
Because the chlorophyll has been solved in the alcohol
4) What is the function of iodine solution in this experiment?
As the indicator of amylum content
5) What are the advantages from photosynthesis process?
Content of oxygen in the environment will be increase
6) What will happen, if all of plants die? All of living thing will die too
7) How is light intensity influence on the rate of photosynthesis process?
More sun light the rate of photosynthesis will be increase
8) What is the conclusion that you get from this experiment?
Sun light can influence the photosynthesis process and produces the amylum and oxigen
Group :
Members of group :
1…………………………..
2…………………………..
3…………………………..
4…Ҁ�……………………..
STUDENT WORKSHEET 2
A. Topic
Factors that influence on the rate of photosynthesis process
B. Objectives
1. To explain the factors that influence on the rate of photosynthesis process
2. To explain the history of photosynhtesis research
C. Activity
Reference study
D. Discussion exercise
I. Factors that influence on the rate of photosynthesis process:
1. Mention the factors that influence on the rate of photosynthesis
process?
2. How does light intensity influence on the rate of photosynthesis
process?
4. How does carbon dioxide influence on the rate of photosynthesis
process?
II. History of photosynthesis research
To explain the experiment that done by scientist (according to your group name).
III. Fill the table below by writing the name of scientist who done the
photosynthesis experiment, and then give mark (√) in the source column
or product column if found in their experiment.
No.
|
Scientist Name
|
Source of Photosynthesis
|
Product of Photosynthesis
| |||||
Light
|
Chlorophyll
|
H2O
|
CO2
|
C6H12O6
|
O2
|
Energy
| ||
1.
|
Jan Ingenhousz
|
√
|
√
| |||||
2.
|
Julius Von Sach
|
√
|
√
| |||||
3.
| ||||||||
4.
| ||||||||
5.
| ||||||||
6.
| ||||||||
7.
| ||||||||
8.
| ||||||||
Group :
Members of group :
1…………………………..
2…………………………..
3…………………………..
4…………………………..
0 komentar:
Posting Komentar