(Before It's News)
An essay in New Scientist called “Root Intelligence” is a fascinating read. Research shows that plants can think, feel, and learn, and that “a plant's awareness of its environment is often keener than an animal's precisely because plants cannot flee from danger and so must sense and adapt to it.” Plants also see light and have a sense of smell, taste, touch, and hearing.
Source:
http://psychologytoday.com//blog/animal-emotions/201412/smarty-plants-research-shows-they-think-feel-and-learn