Matter Cycling and Photosynthesis

What statement best describes the roles of photosynthesis & respiration in the carbon cycle?

• Respiration & photosynthesis both add carbon to the atmosphere.

• Respiration & photosynthesis both remove carbon from the atmosphere.

• Respiration adds carbon to the atmosphere while photosynthesis removes carbon from the atmosphere.

• Respiration removes carbon from the atmosphere while photosynthesis adds carbon to the atmosphere.

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NGSS.MS-LS1-6

Which is the correct formula for photosynthesis?

• CO₂ + H₂O --(in sunlight)--> C₆H₁₂O₆ + O₂

• sunlight + CO₂ + H₂O --> C₆H₁₂O₆ + O₂

• C₆H₁₂O₆ + O₂ --> (in sunlight) CO₂ + H₂O

• CO₂ + H₂O --> C₆H₁₂O₆ + O₂ + sunlight

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NGSS.MS-LS1-6

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What gas  do plants give off after conducting photosynthesis that humans/animals need in order to live?

• Oxygen

• Carbon

• Nitrogen

• Hydrogen

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

If the plant population decreased, the amount of carbon in the atmosphere would _________.

• Stay the same

• Increase

• Decrease

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NGSS.MS-LS1-6

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What effect does deforestation have on the carbon cycle?

• Decreases carbon dioxide

• Increases oxygen

• Increases carbon dioxide

• decreases oxygen

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Which of the following processes takes CO₂ out of the atmosphere?

• Respiration

• Combustion

• Decomposition

• Photosynthesis

Tags

NGSS.MS-LS1-6

The _____________ is an organelle inside a plant cell and is the actual site that photosynthesis takes place.

• Chlorophyll

• Chloroplast

• Xylem

• Phloem

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NGSS.MS-LS1-6

Which is not a REACTANT needed for producing food in a green plant?

• Carbon dioxide

• Oxygen

• Water

Tags

NGSS.MS-LS1-6

This substance in the leaf is responsible for absorbing the sun's energy and also reflects green light waves.

• Cell wall

• Chloroplast

• Chlorophyll

• Nucleus

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NGSS.MS-LS1-6

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The stoma on the underside of the leaf allows_______to move in and out of the leaf.

• Gases

• Water

• Nutrients

• Soil

Tags

NGSS.MS-LS1-6