Material like sucrose is transferred into phloem tissue using energy from ATP. This increases the osmotic pressure of the tissue causing water to move into it. This pressure moves the material in the phloem to tissues which have less pressure. please explain this point. class 10 science page 110
Dear student
Osmosis is the movement of water molecules across a semi-permeable membrane from their higher to lower concentration.
On increasing sucrose concentration in phloem sieve tubes, it causes the water to move from higher concentration to lower concentration. Sucrose creates the concentration gradient (difference in concentration within a system) which results in increasing osmotic pressure.
Regards
Osmosis is the movement of water molecules across a semi-permeable membrane from their higher to lower concentration.
On increasing sucrose concentration in phloem sieve tubes, it causes the water to move from higher concentration to lower concentration. Sucrose creates the concentration gradient (difference in concentration within a system) which results in increasing osmotic pressure.
Regards