Washington Comprehensive Assessment Of Science (WCAS) Grade 5 Practice Questions - Washington Comprehensive Assessment Of Science - Grade 5 Exam

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A scientist grows a potted plant from a seed in a sealed container with air, light, and water. Over several months, the plant gains 500 grams of mass while the dry soil loses less than 1 gram. Where did the plant get most of the matter for its growth?

From carbon dioxide in the air and water absorbed by roots. From solid soil minerals absorbed directly into leaves. From sunlight changing directly into solid matter. From fertilizer particles produced inside the plant stem.

Correct Answer:

From carbon dioxide in the air and water absorbed by roots.

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