Elaborate the answer to the given question:
 
What are the methods used by plants to get rid of excretory products?
 
Answer variants:
excretion
diffusion
gums and resins
solid and liquid waste
stomata
 
a. Gaseous products are expelled by the plants through
in the leaves and lenticels in the stems.
 
b. Plants release stored
by shedding leaves, peeling bark, and falling off fruits.
 
c. The wastes are secreted by the plants in the form of 
as a by-product into the atmosphere.
 
d. The process of removing waste or toxic substances from the tissues and cells of an animal or plant is known as
.