original_query: What are some examples of protective molecules that plants secrete on their surfaces?
query: What are some examples of protective molecules that plants secrete on their surfaces?
answer: Plants secrete resins and waxes (epicuticular wax) on their surfaces to reduce transpiration. Examples include the resins of some chaparral plants like Malosma laurina, and the chalky wax of Dudleya pulverulenta.