BI-2005
Carbon dioxide entering the leaf
Biology · Secondary 4 · Medium · Carbon dioxide entering the leaf
Which statement correctly describes how oxygen reaches the palisade mesophyll cells in a leaf during the day?
- It is pumped into the leaf by xylem vessels.
- It diffuses through stomata and air spaces to the mesophyll cells.
- It is carried by phloem from the roots to the mesophyll cells.
- It enters through the cuticle by active transport.
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