Is it safe to eat 1000 calorie a day for weight loss regime? i'm 5'5 , female, and morbidly obese ( 240 pounds) i also work out the gym an hour a day

Depends: With proper supervision by a health care profession it is okay but if you are doing this on your own it is not safe. You want to reduce calories per day through a good diet and exercise regimen. If you can burn more calories per day while on a healthy diet you will lose weight. Goal weight loss no >0.5-1lb/week. Talk to a physician or a nutritionist to help you through this process safely.