WVGSA Grade 5 Science Practice Questions - West Virginia General Summative Assessment Grade 5 Science Exam

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An investigation tests plant growth under different gas environments: - Container 1: Supplied with Sunlight + Water + Carbon Dioxide -> Healthy growth (+12.4 g mass gain) - Container 2: Supplied with Sunlight + Water + NO Carbon Dioxide -> Stunted growth (+0.2 g mass gain) - Container 3: Supplied with Carbon Dioxide + Sunlight + NO Water -> Wilts and dies (0 g mass gain) Which conclusion is directly supported by these experimental data?

Plants derive mass primarily by consuming soil minerals. Both carbon dioxide and water are essential inputs for plants to gain significant mass through photosynthesis. Sunlight alone provides all the mass needed for building plant tissue. Carbon dioxide gas is toxic to growing plant leaves.

Correct Answer:

Both carbon dioxide and water are essential inputs for plants to gain significant mass through photosynthesis.

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