Exploring Photosynthesis Experiments

What is the overall equation for photosynthesis?

• 6CO2 + 6H2O -> C6H12O6 + 6O2 + light energy

• 6CO2 + 6H2O + light energy -> C6H12O6 + 6O2

• 6O2 + light energy + C6H12O6 -> 6CO2 + 6H2O

• C6H12O6 + 6O2 -> 6CO2 + 6H2O + light energy

Name the two main products of photosynthesis.

• Glucose and Oxygen

• Carbon Dioxide and Water

• Oxygen and Carbon Dioxide

• Nitrogen and Glucose

What role does light intensity play in photosynthesis?

• Light intensity directly influences the rate of photosynthesis.

• Light intensity has no effect on photosynthesis.

• Higher light intensity decreases the rate of photosynthesis.

• Photosynthesis occurs only in the absence of light.

How does carbon dioxide concentration affect the rate of photosynthesis?

• Higher carbon dioxide concentration decreases the rate of photosynthesis.

• Higher carbon dioxide concentration increases the rate of photosynthesis, up to a saturation point.

• Carbon dioxide concentration has no effect on photosynthesis rates.

• Photosynthesis only occurs in the absence of carbon dioxide.

What is the purpose of using sodium hydrogen carbonate in photosynthesis experiments?

• To provide nutrients for plant growth.

• To increase the temperature of the experiment.

• To absorb excess light during photosynthesis.

• To provide a source of carbon dioxide for photosynthesis.

How can you prove that starch is produced in leaves?

• Leaves do not produce starch; it is only found in fruits.

• Iodine testing is irrelevant to starch production in leaves.

• Starch is produced in leaves as evidenced by the blue-black color change when a leaf is tested with iodine after photosynthesis.

• Starch is produced in roots during the night.

What is the significance of chlorophyll in photosynthesis?

• Chlorophyll helps in the respiration process of plants.

• Chlorophyll is essential for capturing light energy in photosynthesis.

• Chlorophyll is responsible for water absorption in plants.

• Chlorophyll is a type of soil nutrient essential for plant growth.

Describe how you would set up an experiment to test the effect of light intensity on photosynthesis.

• Expose all plants to the same light intensity throughout the experiment

• Set up identical plants under controlled conditions, vary light intensity, and measure photosynthesis rate.

• Use different types of soil for each plant

• Measure the height of the plants instead of photosynthesis

What is the role of water in the photosynthesis process?

• Water acts as a fertilizer for plants.

• Water is a byproduct of photosynthesis.

• Water absorbs sunlight for photosynthesis.

• Water is a reactant for photosynthesis - it reacts with carbon dioxide to releases oxygen.

How does temperature affect the rate of photosynthesis?

• Temperature affects the rate of photosynthesis by increasing it up to an optimal point, beyond which it decreases due to enzyme denaturation.

• Temperature has no effect on photosynthesis.

• Higher temperatures always increase photosynthesis rates.

• Photosynthesis only occurs at low temperatures.