BI-1681
Diffusion
Biology · Secondary 4 · Hard · Diffusion
A plant root absorbs ion X at a rate of 4.0 g h with oxygen and 1.0 g h without oxygen. Ion Y is absorbed at 3.5 g h with oxygen and 3.2 g h without oxygen. Which statement is correct?
- Ion X is mainly absorbed by diffusion.
- Ion Y is mainly absorbed by active transport.
- Ion X is mainly absorbed by active transport.
- Both ions are absorbed only by diffusion.
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