Photo Sphere and Panorama are not available in Google Camera app
Moto G doesn't have a Gyroscope Sensor (but it has an accelerometer). That's why Moto G didn't get the Photosphere option. 

Actually, Panorama doesn't require a gyroscope. While there are obviously ways to do panoramas without a gyroscope. It looks like they use the same engine as Photosphere to do the panoramas. So the app also lacks Panorama.

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Google Camera G+ Thread