On a Nikon D7000, the key question is usually not whether the lens has its own motor, but whether the lens is an autofocus lens at all. Because the D7000 has a built-in screw-drive AF motor, it can autofocus with Nikon AF and AF-D lenses as well as AF-S and AF-P lenses.

For Nikon lenses:

• AF-S = lens has an internal autofocus motor
• AF-P = lens has an internal stepping motor
• Older AF / AF-D lenses generally do not have a motor in the lens

For third-party lenses, check the naming/specs:

• Sigma: HSM indicates a motor
• Tamron: USD or PZD often indicate a motor, but not always consistently
• Tokina: usually check the full specifications directly

So for your D7000, most Nikon autofocus lenses will autofocus whether the motor is in the body or the lens. This becomes much more important on Nikon bodies without a built-in AF motor, where you generally need AF-S or AF-P (or the third-party equivalent) for autofocus.

If you want to verify a specific lens, check the manufacturer’s specifications or a reputable Nikon compatibility chart.