What would a plant look like under a different sunlight. Like for example, O, B, A, F, K, and M-types? I know what a plant would look like under a G-type star like our Sun, what about under a star different from ours?
I can answer that! Well...kinda, I can give some ideas.
As you might remember from school, plants are green because of chlorophyll, a substance plants use to absorb sunlight to make food. It's green because the most intense color light emitted by Sol is green; if they take in too much at once, then it basically hurts the plant. So green plants are the most efficient at absorbing light from a G-class star.
Other such chemical compounds have colors like orange, red, yellow, even purple. These are less efficient than chlorophyll, but they're good for fallback options. These might be better, tho, around other types of stars. Which ones would work best where, I dunno, but it's safe to mention that dimmer stars will, in general, tend to have darker plants. Imagine forests of black trees facing a red dwarf star, absorbing all the light it can...