Acharya Prashant explains that while plants are conscious beings, they lack a central nervous system and therefore do not experience pain in the same way animals do. He defines violence as the act of lowering consciousness or destroying a conscious being. Since consciousness exists on a linear scale, killing a more conscious being, such as an animal, is a significantly greater act of violence than consuming plants. He emphasizes that violence is only a moral concern when a choice exists; unavoidable actions like breathing, which may kill microorganisms, are not considered violence because there is no alternative.