I'm an avid gardener Einstein. Plants do in fact respond to stimuli, or as you put it "sense impressions".
Ability to feel? Try researching if carrots really do scream when you pull them from their beds.
The root ends of plants actually FEEL their way around underground objects like rocks. Their growing tips actually contain and retain the ability to move up and down and from side to side in order to find a way to the nutrients they seek. If they find adequate nutrients just below ground level, they stop searching for food unless the source dries up. Then the roots begin searching again.
What do you suppose those vine plants are doing when they send out their "feelers" to secure the stalk to a trellis? Plants are trainable Einstein. I train the melons every year to climb the trellis. Within a matter of a couple minutes, I can prove to you that the plant actually felt it when it touched the wire and begins to physically wrap itself around the wire.
Again, are plants sentient sir?