An example of slow, directional growth in plants is demonstrated by sunflowers. Sunflowers track the movement of the sun throughout the day, slowly reorienting their blooms to face the sunlight. This apparent movement is a result of the plant’s growth ...

Plant cells communicate touch through electrical-chemical means, similar to the neurotransmission in animals. However, unlike animals, plants lack specialized tissues for information conduction. The transmission of touch information involves chemical signals diffusing from cell to cell.