Photosynthesis Stemscopes Reteach

What are the factors affecting photosynthesis?

• Light intensity, carbon dioxide concentration, and temperature

• Water concentration, oxygen level, and soil pH

Answer explanation

The factors affecting photosynthesis are light intensity, carbon dioxide concentration, and temperature.

Tags

NGSS.MS-LS1-6

How does light intensity affect the rate of photosynthesis?

• Light intensity has no effect on the rate of photosynthesis

• Light intensity causes the production of oxygen in photosynthesis

• Light intensity decreases the rate of photosynthesis

• Light intensity provides the energy needed for photosynthesis.

Answer explanation

Light intensity provides energy for photosynthesis.

Tags

NGSS.MS-LS1-6

Explain the role of carbon dioxide in photosynthesis.

• It is used by plants to produce water and sunlight.

• It is used by plants to produce glucose and oxygen.

• It is used by plants to produce carbon dioxide and methane.

• It is used by plants to produce nitrogen and carbon monoxide.

Answer explanation

Carbon dioxide is used by plants to produce glucose and oxygen, which is the correct choice.

Tags

NGSS.MS-LS1-6

How does temperature affect the process of photosynthesis?

• It affects the rate of photosynthesis by influencing the activity of enzymes involved in the process.

• It has no effect on the process of photosynthesis

• It increases the efficiency of photosynthesis

• It stops the process of photosynthesis completely

Answer explanation

Temperature affects photosynthesis by influencing enzyme activity, increasing or decreasing the rate of the process.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-5

Write the chemical equation for photosynthesis.

• 2CO2 + 2H2O + light energy → C3H6O3 + 2O2

• 4CO2 + 4H2O + light energy → C4H8O4 + 4O2

• 8CO2 + 8H2O + light energy → C8H16O8 + 8O2

• 6CO2 + 6H2O + light energy → C6H12O6 + 6O2

Answer explanation

The correct chemical equation for photosynthesis is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. This equation represents the conversion of carbon dioxide and water into glucose and oxygen using light energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the reactants in the photosynthesis equation?

• carbon dioxide and water

• nitrogen and sunlight

• hydrogen and carbon monoxide

• oxygen and glucose

Answer explanation

The reactants in the photosynthesis equation are carbon dioxide and water. They are used to produce oxygen and glucose through the process of photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the products of the photosynthesis equation?

• oxygen and nitrogen

• glucose and nitrogen

• carbon dioxide and water

• glucose and oxygen

Answer explanation

The products of the photosynthesis equation are glucose and oxygen. Glucose is the main source of energy for plants, while oxygen is released as a byproduct.

Tags

NGSS.MS-LS1-6

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Why is photosynthesis important for the environment?

• Photosynthesis is not important for the environment because it has no impact on the balance of gases in the atmosphere.

• Photosynthesis is important for the environment because it produces carbon dioxide and removes oxygen, disrupting the balance of gases in the atmosphere.

• Photosynthesis is important for the environment because it produces oxygen and removes carbon dioxide, helping to maintain the balance of gases in the atmosphere.

• Photosynthesis is not important for the environment because it depletes oxygen and increases carbon dioxide levels.

Answer explanation

Photosynthesis is important for the environment as it produces oxygen and removes carbon dioxide, maintaining the balance of gases in the atmosphere.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Explain the significance of photosynthesis for living organisms.

• Photosynthesis provides food and oxygen for living organisms.

• Photosynthesis creates shelter and protection for living organisms.

• Photosynthesis produces energy and heat for living organisms.

• Photosynthesis provides water and carbon dioxide for living organisms.

Answer explanation

Photosynthesis provides food and oxygen for living organisms.

Tags

NGSS.MS-LS1-6

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How does photosynthesis contribute to the food chain?

• It has no impact on the food chain

• It only provides food for animals, not plants

• It provides food for plants and other organisms in the food chain.

• It depletes the food supply for other organisms

Answer explanation

Photosynthesis provides food for plants and other organisms in the food chain.

Tags

NGSS.MS-LS1-6