If you believe it lacks those traits but is conscious, you believe in a definition of consciousness that is meaningless, as “human-like” is the only reference against which we can measure consciousness. A good thought experiment is to try and imagine a consciousness that is radically different from humans, and whether we would be same to even register it as “consciousness” at all. (Incidentally, pretty much all portrayals of aliens in sci-fi give them a human-like consciousness, just with varying degrees of twist on top of it to make it feel engaging.)
> “My gift to industry is the genetically engineered worker, or Genejack. Specially designed for labor, the Genejack’s muscles and nerves are ideal for his task, and the cerebral cortex has been atrophied so that he can desire nothing except to perform his duties. Tyranny, you say? How can you tyrannize someone who cannot feel pain?”
— Chairman Sheng-ji Yang, “Essays on Mind and Matter”
[1] https://paeantosmac.wordpress.com/2016/02/02/base-facility-g...