Holy shit this thread is full of dipshits that don't know anything about veganism. A bunch of even dumber fucks think plants are sentient or feel pain. You animal abuse apologist should actually take some time to understand why people are vegan.
Anyway OP, for this particular question you're going to find two vegan camps.
Camp 1 - the majority of vegans - No brain. No conscious experience. Not sentient. There is no subject, so there is no one to grant rights to. You can eat jellyfish - but like every other vegan on the planet I'd ask why the fuck you want to eat then instead of literally anything else that's vegan. Then we remember that, it's just a gotcha question. Maybe focus on questions that seeks to reduce and reject the trillion+ other victims people not being vegan creates.
Camp 2 - the minority of vegans - Isn't plant matter not vegan >:(
There's actually a lot of interesting science around plant "mentation" for lack of a better term, stuff that's actually super scary if you stop to think about it.
"Plants emit volatile organic compounds (VOCs) as a means to warn other plants of impending danger. Nearby plants exposed to the induced VOCs prepare their own defense weapons in response."
"Lilach Hadany, a professor at Tel Aviv University’s School of Plant Sciences and Food Security, wanted to better understand whether plants use the acoustic realm of communication, too.
In a study published this year, her team put tomato and tobacco plants in an acoustically isolated box and then recorded any ultrasonic sounds produced between 20 and 150 kilohertz. They experimented with cutting stems or leaving them without water as if to simulate drought.
The researchers found that the plants emitted popping and clicking sounds at around 60 decibels, approximately as loud as human chatter. These sounds were at an ultrasonic frequency that humans cannot naturally hear, however."
"Plants are able to sense and optimally respond to so many environmental variables—light, water, gravity, temperature, soil structure, nutrients, toxins, microbes, herbivores, chemical signals from other plants—that there may exist some brainlike information-processing system to integrate the data and coördinate a plant’s behavioral response. The authors pointed out that electrical and chemical signalling systems have been identified in plants which are homologous to those found in the nervous systems of animals. They also noted that neurotransmitters such as serotonin, dopamine, and glutamate have been found in plants, though their role remains unclear."
What you are describing is reaction to stimuli. You also describe gas releasing from tomatoes. Plants definitely have some form of biological intelligence but Vegans don't care about that and that's my point. Your comment doesn't address OP's question because what you are talking about has nothing to do with Veganism. This is why I got so dang frustrated. So many of these commenters were not in a position to answer OP's question because they don't know what Veganism is or what Vegans value.
Biological intelligence is not the same as having a subjective experience. If there is no subject, there is no one to grant rights to. There is no one ever experiencing pain or pleasure etc. You could at best take an agnostic position on plant consciousness. As we understand it today, consciousness is an emerging property of life with brains/nervous systems. In any case you are probably and hopefully wholly uncaring of tomatoes being harvested, and in that respect it's hard for me to discern your point of discussion as good faith.
Yeah it's totally fine to be fascinated with the chemical interactions of plants. This just wasn't the thread to bring it up if we're addressing OP's question in good faith.
I was responding to your (rather snide, now deleted) comment regarding "idiots in the thread posting about plant intelligence."
There is more going on with plant communication than we give them credit for. Can it be called "intelligence"? Well, not as we currently comprehend it, no. But at the same time, it's not as easily dismissed either.
Yeah, I think derailing the thread with bad faith intentions to redefine Veganism and not answering OP's question is pretty idiotic. Mod thought my comment was mean, but idc.
Ecological Vegans: A pound of animals tends to take 10 lbs of plants to sustain. Also other animals need these resources so using the smallest lowest impact sources to supply ourselves with food makes it more "ecologically vegan"
That said I don't think jellyfish have any kind of intelligence we can sympathize with so anti cruelty vegans as far as we know can eat jellyfish unless some scientific breakthrough is made.
There's a great old radiolab that covers and critiques 'plant intelligence' but afaik plants are no more intelligent than your immune system - they have some kind of stimulus memory but nothing resembling human logic or sensation
Jellyfish are consumed as food in some parts of the world. I think the question may come from the fact that there's always some articles around about how jellyfish may be the food of the future, since they can be grown at sea (reducing land use) and don't require feed beyond algae, which is great from both an environmental and resource management perspective. I'm not sure it's entirely a cynical gotcha question :)