In 2014, two Chilean botanists were in the forest and discovered something almost unthinkable, incredible about a plant called boquila trifoliata. It grows upward, climbs up the trunks of trees and is able to imitate their leaves. Overgrowing on the next tree, it can change its leaves in order to imitate the leaves of the second tree, and so on. And this happens three, four, five times in his life. The plant completely reproduces the leaves and even its damage, patterns.
The mechanism is currently unknown as to how B. trifoliolata can mimic the host's leaves so well, but two possible mechanisms are proposed. One hypothesis is that volatile organic compounds released from the leaves of the host plant induce phenotypic changes in nearby leaves of B. trifoliolata. By receiving various host signals into its system, it is able to create specific signals and hormones in its tissues in order to regulate the transcription of leaf morphology genes and developmental pathways for leaf differentiation. Another hypothesis is that horizontal gene transfer may occur between the host and B. trifoliolata.
Thank you so much dear professor Pushkin Sergey Viktorovich for sharing a really interesting answer, it really fascinated me...I will search for further information regarding it.
Plants communicate with other plants by their roots and fungi help them in this process by ensuring an interconnected network. Plants don't have a brain so they don't feel pain or don't have any kind of feelings those we have. But they have the mechanism at the cellular level to find the difference in their surroundings and to respond according to it.
Dear Pankaj Yadav Plants communicate using volatile organic compounds, electrical signaling, and common mycorrhizal networks between plants and a host of other organisms such as soil microbes, other plants (of the same or other species), animals, insects, and fungi.
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Plant consciousness is evidenced by the process of bio-communication in plant cells, which means that plants are sentient life forms that feel, know, and are conscious. The scientific field of neurobiology has been effective in demonstrating plant consciousness. http://www.esalq.usp.br/lepse/imgs/conteudo_thumb/The-Consciousness-of-Plants.pdf
Botanists who do think plants have cognitive abilities such as perception, learning, and consciousness have performed experiments suggesting plants are able to learn from past experiences and can be classically conditioned. Because of this they argue plants are conscious https://www.the-scientist.com/news-opinion/botanists-say-plants-are-not-conscious-66101
Plants Really Do Respond to The Way We Touch Them, research shows. It's something that plant lovers have long suspected, but now scientists have found evidence that plants really can feel when we're touching them https://www.sciencealert.com/plants-really-do-respond-to-the-way-we-touch-them-scientists-reveal
Scientists already know that plants are highly sensitive to touch of any kind, and even have a word for this phenomenon, “thigmomorphogenesis.” If you've ever touched a Mimosa pudica (also known as the “sensitive plant”) you have already witnessed this phenomenon first hand—the Mimosa's fan-like leaves close up like, ... https://qz.com/1499046/plants-can-feel-you-touching-them-and-they-dont-like-it/