AP EAMCET Medical 2017 Shift 2 Paper

Choose the collect statements
I) Accumulation of K+ ions in the guard cells is associated with passive influx of Cl− ions
II) Sugars move from companion cells to seive tubes through passive transport
III) Water from xylem moves to phloem by Osmosis
IV) Unidirectional flow of water in root is regulated by endodemiis