WIFI is turned off on my mobile.

A. I had turned off auto sync feature as follows:

1. Apps > Settings > Accounts & sync > Google > Auto sync is turned off for my email
2. Apps > Settings > Accounts & sync > E-mail > Auto sync is turned off for my email

B. In Gallery, I had turned off auto sync as follows:

1. Gallery > Settings > unchecked option for 'Sync on Wi-Fi only'

C. Deleted auto-synced photos in Gallery as follows:

1. Apps > Setttings > Apps > ALL > Gallery > Clear data and Clear cache

Now, when I visit Gallery I do not see photos auto-synced, but once I turn on WIFI and visit Gallery, it again syncs photos from 'somewhere'. And, shockingly, option as specified in B.1(listed above) is auto checked. The photos which I see are the ones which I had uploaded to my Google+ a/c. Why I say 'somewhere' because, I had deleted all photos and posts which contain photos from my Google+ account. Still, I can see photos appearing when WIFI is turned on.

Please help:

1. From where does Android sync photos?
2. Get rid of photos to be auto synced when WIFI is turned on.

Thanks much!

PHONE: LG Optimus L7 II Dual and OS: Android v 4.1.2