How do I know if a floor is 'engineered' wood or plastic lookalike?

[ampere]

Bought a house today (I don't muck around!). The reddish brown 'laminate' floor has faded badly before they put a conservatory on the end of the house. I want to 'redo' it but how do I know whether it's wood or not? I think the floor is fairly old (>5 yrs), and I can see and end of a 'plank' which has loads of tiny 'pinprick' size dots on it.

What do you think?

Does it matter if you are replacing it? You should be able to tell just by looking. Engineered wood is layers of wood glued together, laminate is plastic printed woodgrain applied to a layer of mdf.

If you look at the whole floor, if it's laminate then you'll see a pattern repeat, ie you'll see several planks with exactly the same grain pattern/knots.