define pneumatophores with example

1.	define pneumatophores with example
Answer» Pneumatophores are adventitious root. In some plants such as Rhizophora growing in swampy areas , many roots come out of the ground and grow vertically upwards to get oxygen such roots are called pneumatophores These are the roots found in plants inhabiting the marshy areas. They are special type of erect roots for breathing. Normal roots are saturated with water so there will be poor aeration. So the pneumatophores are also called as breathing roots. These roots possess pores called as breathing pores or pneumatophores for exchange of gases Example: Avicennia.

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