What physiological problems do halophytes that lives in salty marshes face and how do they overcome these problems?

Problems

• Can lose water to the surrounding water by osmosis
• They also face a problem of high concentrations of ions building up in their cells
• Can experience physiological drought

Means of overcoming problems

• The possess tissues that tolerant to physiological drought
• Some store water in succulent stems and leaves
• Some regulate their salt content by excreting salts from salt gland at the leaf margins e.g., sea milk worth
• Halophytes have root hairs a higher solute concentration than those of ordinary plants, which enables them to absorb water by osmosis in the normal way
• Air spaces in leaves provide buoyancy and make air available in water logged anaerobic mud
• Their leaves have reduced number of stomata to reduce the rate transpiration