A study found that redwood trees have two different leaves that serve different functions. The peripheral leaf, left, focuses on photosynthesis while the axial leaf is devoted to absorbing water.

An impressive body of evidence published this week reveals the answer to a mystery that has puzzled plant scientists for more than 30 years: the role of the molecule suberin in the leaves of some of ...

Only the areas that have been exposed to light will photosynthesise and therefore test positive for starch, showing that light is necessary for photosynthesis. Destarch a variegated plant – partly ...