Fact 1: Astem is used to store water by some plants.

Fact 2: Inside the stem is fibrous material.

Given the two facts above, answer the question "Where do some plants store water?" with the following options: 
- near the shoreline
 - fibrous material
 - rocks
 - soil
 - dormant state
 - mountain sources
 - one celled organisms
 - air


 

  fibrous material       