Actually lobsters use muscles to move.
Venus fly traps have three trigger hairs on the inside of their flaps, and two of them have to be touched in quick succession in order to trigger the plan to emit electrical signals which causes it to rapidly grow two lines of cells which causes the trap to close due to the slight increase of mass from the new cells where the two halves are joined.
Consciousness or lack of, compared to what? People who cannot perceive anything other than themselves as being conscious because their concept (for lack of a better term) of reality is themselves as the center of their infinitesimally small dot of a universe as they wake, eat, crap, sleep, and repeat with all mental processes fully automated? Oh, the irony,,,
Consciousness is not I think, therefore I is. It is to be able to step outside of oneself and realize that everything else can do so also because there is more to life than one's own self-absorbed instinct-driven need to survive.