Sentence:  <WSD>Ageotropic</WSD> growth is also displayed by shoots of 'lazy' mutants (e.g., ageotropica mutant of tomato and lazy mutants of rice, wheat, and maize), stolons or runners (e.g., strawberries), and underground stems or rhizomes (e.g. bamboos, quackgrass, and potato). 
Meaning of the word marked with <WSD> tags:  Failing to show an expected or typical earthward direction.