Matter Enters Through Photosynthesis Practice Test

A simplified model shows:

Model:

• Arrow labeled carbon dioxide (matter) from air → leaf
• Arrow labeled water (matter) from soil → roots
• Arrow labeled sunlight (energy) from Sun → leaf
• Inside plant: sugars → plant body parts

A student says: “Plants get almost all their mass from soil because that is where their roots are.” Which statement best evaluates this claim using evidence from the model?

A student reads a model of photosynthesis:

Model:

• Arrow: air → leaf labeled carbon dioxide (matter enters)
• Arrow: soil → roots labeled water (matter enters)
• Arrow: Sun → leaf labeled sunlight (energy enters)
• Inside plant: label matter becomes sugars that build new plant tissue

What evidence from the model shows matter entering the organism during photosynthesis?