Two-Way Speakers (manufactured) without crossovers?

Hey all. I was looking into some speakers and started noticing some speakers advertise crossover networks in specifications and others did not. Thinking of this, I wondered if a set I currently own did not have crossovers. I pulled the phono plates (these are Peavey PVi10 speakers I got within the last two years) and there is nothing in there, just wires going directly to tweeter and woofer.

My questions.

A) Is this common? I haven't purchased speakers (other than these Peavey's) for a long time, but have never seen without crossovers.
B) Isn't this 'bad'? It would not be filtering (both full range signals) nor distributing power (woofer should get more).
C) Should I add a crossover, or in this scenario is it designed this way by MFR to power as it should?
D) If the cab says 8 ohms, what would the components be? 8 or 16?

crossover.jpg