Thinking and Working Scientifically (Models, enquiry, practical work)
Question 1 of 30
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A student says: "Plants grow because soil turns into plant material."
Which statement is the
best scientific correction
of this idea?
Select one option.
A
Most of a plant's mass comes from carbon dioxide in the air and water, built into sugars during photosynthesis.
B
Most of a plant's mass comes from minerals in the soil that become cellulose and starch.
C
Plants mainly gain mass by absorbing oxygen from the air and storing it as solid material.
D
Plants gain mass mainly because sunlight is converted directly into matter in the leaves.
E
Plants gain mass mainly because soil particles are pulled up through roots and packed into stems.
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