In: Biology
Polupodium is an epiphytic fern that lives on the tree branches.
When dried that means 97% of water is removed unlike higher plants the central vacuole of polypodium was not damaged.
So, when the dried leaf immersed in water then the photosynthesis become active just within 30 minutes of water supply. This occurs in open nature because this process is aerobic.
In anaerobic conditions (lack of oxygen) the process is inhibited. So, when sealed in plastic container the photosynthesis is inactive and when the leaf is removed from container the process again activated.
So, the dried leaf with water in open space carries photosynthesis where as leaf in sealed plastic container photosynthesis become inhibited.