Plants without sunlight?

[Cat]

You can also keep plants alive in the dark for a very long time if you provide sugar and vitamins. So, water it with sugar/blood/water mixture and you can keep it in the dark for a very very long time.

[JackBean]

So growing taller is an adaptation to get sunlight? That is very cool.

Of course, because in nature those plants which grow in dark are usually those which are still below the ground.

and also in forest if you're small you do not get that much light thus you have to grow taller to reach sunlight.

[warnv18]

depends on plant
some can germinate with or without light. lettuce needs it