Photosynthesis investigation Virtual lab

Photosynthesis

REVIEW
Let's see what you remember from yesterday's lesson.

Multiple Choice

Plants and algae are called producers because;

• They make their own food

• They eat each other

• They eat their own food

• They produce carbondionxide

Multiple Choice

Humans breathe by breathing in ....................and breathing out .........................

• Oxygen, Carbondioxide

• Carbondioxide, Oxygen

Multiple Choice

Why do plants use energy from the Sun?

• To make food

• To get water

Multiple Choice

The products of photosynthesis are:

• Sugar (glucose), Oxygen, water

• Carbondioxide, water, energy

Multiple Choice

The reactants of Photosynthesis are:

• Carbon dioxide, water

• Sugar (glucose), oxygen

Multiple Choice

What is the ultimate source of energy for all living things?

• Sun

• Plants

• Food

• Electricity

Multiple Choice

The process by which plants make their own food is called the ......................

• Photosynthesis

• Cellular respiration

Multiple Choice

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + light + H₂O --> O₂ + Sugar

• CO₂ + sugar + H₂O --> O₂ + light

• _O2 + light + H₂O --> CO₂ + Sugar

• CO₂ + O₂ + H₂O --> Light+ Sugar

Multiple Select

Underwater photosynthesis takes __________ than above ground photosynthesis.

• shorter

• longer

Multiple Select

Select all of the following that are reactants used by plants to make their own food (what goes into photosynthesis?)

• Water

• Sunlight

• Carbon Dioxide

• Oxygen

• Glucose

Multiple Choice

What is an autotroph?

• An organism that can make its own food

• An organism that must eat others for food

Multiple Choice

True or False: Heterotrophs make their own food through the process of photosynthesis

• True

• False

Match

Match the following

• Pigment that makes plants green

Chloroplast

Chlorophyll

Mitochondria

Where plants get their energy

Sugar made from photosynthesis

• Chloroplast

• Chlorophyll

• Mitochondria

• Where plants get their energy

• Sugar made from photosynthesis

Labelling

Label Photosynthesis

Drag labels to their correct position on the image

Sunlight

O2

Glucose

CO2

H2O

Drag and Drop

The ​

Placeholder

is where photosynthesis happens

Drag these tiles and drop them in the correct blank above

chloroplast

mitochondria

chlorophyll

nucleus

cytoplasm

Drag and Drop

The pigment ​

Placeholder

​ is what makes plants green.

Drag these tiles and drop them in the correct blank above

chlorophyll

mitochondria

nucleus

cytoplasm

chloroplast

Hotspot

Select the water

Drag and Drop

When does photosynthesis occur?​ ​ ​

Placeholder

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Day only

Carbon dioxide, water and light

Carbon dioxide + water

Both night and day

Glucose and oxygen

All living things

Plants and some unicellular organisms

Drag and Drop

The equation for photosynthesis is;

carbon dioxide + ​

Placeholder

+ sunlight → glucose + oxygen



Carbon dioxide comes from the ​

Placeholder

.

It enters the plant through holes in the leaves called the ​

Placeholder

. Water comes from the soil.

It ​diffuses into the plant through the roots and travels up the stem via the ​

Placeholder

.

Glucose is the food and is stored as starch. ​

Placeholder

is the by-product of this reaction.

Drag these tiles and drop them in the correct blank above

water

air

stomata

xylem

Oxygen

Investigating photosynthesis

Open the link; Photosynthesis Virtual Lab in a new tab

Use it to complete the rest of this investigation.

Drag and Drop

Drag these tiles and drop them in the correct blank above

Introduction:  During the process of photosynthesis, oxygen is released. The release of oxygen can be visibly observed in plants as bubbles. 

Counting the number of bubbles released over a period of time can serve as a measurement of the rate of photosynthesis.

There are factors that can increase the rate of photosynthesis in plants. This simulation will explore those factors.

Multiple Choice

From the previous screen, When oxygen is released during photosynthesis, it is observed in plants as....

• Bubbles

• Leaves

• Molecules

• Water

Procedure;

Photosynthesis Virtual Lab

You will change the variables and record the number of bubbles released in a minute.  Use the clock and the start / stop buttons. 

Experiment 1

How Does Changing the Light Intensity and Distance Affect
Photosynthesis?

Part 1; Changing light intensity

Labelling

Start with the 40W power source and observe one minute. Leave the distance at 50 cm for each trial in this section.  Reset and switch to 100W.  Drag to record your results into the yesllow part of the table.

Drag labels to their correct position on the image

7 Bubbles

6 Bubbles

3 Bubbles

4 Bubbles

Match

Match the following;

1. In this experiment;

• 1. The independent (manipulated) variable is the

• 1. The dependent (responding) variable is the

• The control/constant (unchanged) variable

1. light intensity (power)

bubbles

distance

• 1. light intensity (power)

• bubbles

• distance

Experiment 1

Part 2; Changing distance from the light source

Reset the simulation and test how changing the distance from the light will affect the rate of photosynthesis.

Labelling

Set the intensity at 100W, start with 50cm distance, then reset, keep intensity at 100 and change distance to 100cm. Record your data in the table below.

Drag labels to their correct position on the image

5 bubbles

2 bubbles

4 bubbles

6 bubbles

3 bubbles

Match

Match the following;

In this experiment,

• the independent (manipulated) variable is the

• the dependent (responding) variable is the

• the control/constant (unchanged) variable is the

distance

bubbles

light intensity

• distance

• bubbles

• light intensity

Open Ended

Summarize the results and provide an explanation or reasoning for what was observed. How does light intensity and distance affect the rate of photosynthesis? How do you know?

Experiment 2

Experiment 2: How Does the Color Of Light Affect Photosynthesis.

Reset the simulation and run the tests for the different colors of light. Use 100W bulbs at 50 cm.

Labelling

Reset the simulation and run the tests for the different colors of light. Use 100W bulbs at 50 cm.

Fill in the table with your results.

Drag labels to their correct position on the image

6

6

15

12

5

9

8

7

Open Ended

Summarize the results and provide an explanation or reasoning for what was observed. How does light color affect the rate of photosynthesis? Why does the color of light matter?

Multiple Choice

What is the objective of the photosynthesis lab?

• To investigate the factors that influence the rate of photosynthesis in plants

• To manipulate variables to investigate the factors influencing the rate of photosynthesis

• To measure the impact of carbon dioxide concentration on the rate of photosynthesis

• To observe the impact of light intensity on the rate of photosynthesis

Multiple Choice

What skills are developed through hands-on experience and scientific inquiry in the photosynthesis lab?

• Musical skills

• Critical thinking skills

• Artistic skills

• Mathematical skills

Multiple Choice

What is the significance of photosynthesis to the natural world?

• It measures the impact of carbon dioxide concentration on the rate of photosynthesis

• It manipulates variables to investigate the factors influencing the rate of photosynthesis

• It enables plants to convert light energy into chemical energy

• It measures the impact of light intensity on the rate of photosynthesis

Multiple Choice

What can be concluded by comparing the data collected under different conditions in the photosynthesis lab?

• The pH of the soil

• The plant's appearance

• The factors influencing the rate of photosynthesis

• The number of bubbles released

Multiple Choice

What process do plants undergo to convert light energy into chemical energy?

• Photosynthesis

• Transpiration

• Fermentation

• Respiration

Multiple Choice

What should be measured and recorded during the photosynthesis lab?

• The number of petals on the plant

• The weight of the plant

• The length of the roots

• The time taken for the pH indicator solution to change color

Multiple Choice

Why is it important to conduct multiple trials during the photosynthesis lab?

• To observe the color change in the leaves

• To compare the pH of different solutions

• To measure the height of the plant

• To ensure accuracy and reliability of results

Multiple Choice

What is the purpose of the stopwatch or timer in the lab?

• To observe the impact of light intensity on the rate of photosynthesis

• To record the time taken for the experiment

• To provide a source of oxygen for the plant

• To measure the impact of carbon dioxide concentration on the rate of photosynthesis

Multiple Choice

How can the influence of temperature on the rate of photosynthesis be studied?

• By changing the type of soil

• By adjusting the distance between the light source and the plant

• By measuring the pH of the water

• By adding ice cubes to cool the surrounding water

Multiple Choice

Which is not a reactant (left side) needed for producing food in a green plant.

• Carbon Dioxide

• Water

• Oxygen

• Sunlight

Multiple Choice

What part of the leaf is responsible for absorbing the sun’s energy?

• Cell Wall

• Veins

• Chlorophyll

• Nucleus

Multiple Choice

The stoma on the underside of the leaf allows ___________ to move in and out of the leaf.

• Gases

• Water

• Nutrients

• Soil

Multiple Choice

Glucose is a type of _______________.

• Dairy Product

• Protein

• Salt

• Sugar

Multiple Choice

Which part of the plant transports nutrients from the leaves to the rest of the plant?

• Stoma

• Phloem

• Chloroplast

• Chlorophyll

Multiple Choice

The ____________ is the most photosynthetic part of a plant.

• Trunk

• Flower

• Stem

• Leaf

Multiple Choice

The vascular tissue of the plant that transports water is the...

• roots

• stems

• xylem

• phloem

Multiple Choice

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + O₂ + H₂O --> Light+ Sugar

• O₂ + light + H₂O --> CO₂ + Sugar

• CO₂ + light + H₂O --> O₂ + Sugar

• CO₂ + sugar + H₂O --> O₂ + light

Multiple Choice

If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?

• Photosynthesis

• Respiration

• Water absorption

• Ingestion of Carbon Dioxide

Multiple Choice

Water plants were placed at different distances from a light source to test how the rate of photosynthesis would be affected. The number of bubbles of gas coming from the plant was counted to measure the rate.

Approximately how far from the light is a plant that produces 13 bubbles per minute?

• 35 cm

• 60 cm

• 75 cm

• 90 cm

Multiple Choice

The openings that are found in the leaves of plants are called:

• Stomata

• Chlorophyll

• Xylem

• Chloroplast

Multiple Choice

• What is the role of chlorophyll in the photosynthesis?

• • It absorbs sunlight energy and uses it to split water molecules.

• • It stores sunlight energy

• • It converts carbon dioxide into glucose.

• • It transports oxygen from the chloroplasts to the rest of the plant.

Multiple Select

• What factors affect the rate of photosynthesis?

• • Light intensity, carbon dioxide concentration, temperature, and the availability of water.

• • The availability of water and chlorophyll.

• • The color of the light.

• • The type of plant

Reorder

Last one;

Reorder the following to complete the sentence about photosynthesis.

• Photosynthesis is a process

• by which plants use

• sunlight to convert carbon dioxide

• and water into

• oxygen and glucose.

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5