This is the basis for the opening and closing of a stoma, known as stomatal movement, which controls gas exchange necessary for photosynthesis and limits water loss. How do guard cells change ...

A highly magnified video of single stoma opening and closing on a leaf of a Tradescantia spathacea plant, commonly known as a boat lily. Content is created and owned by Douglas Clark and used with ...

The leaf is one of the most important organs of a plant. Leaves produce food for the plant through a process called photosynthesis. The leaves of different plants vary widely in size, shape and ...