What would be changed if mitochondrial activity was inhibited by a metabolic poison acting on cells in the phloem tissue?
1- concentration of hydrogen ions in the cell wall of companion cells
2- concentration of sucrose in the cytoplasm of cells in a leaf
3- hydrostatic pressure gradient in the phloem sieve tube
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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