by adding micro sd card could the memory of the ideapadA1-07 be increased
No. A memory card does not increase the amount of memory (RAM) on any laptop or computer. A memory card is for data storage only, like a hard drive. You can only increase the amount of memory on your Lenovo by installing more RAM modules inside it, or by replacing the existing modules with new ones that are a higher capacity.
Actually you can, sort of. It's called ReadyBoost technology. Google for ReadyBoost and you will find lots of sites that tell you how. It uses the flash card for hard drive cache to improve the performance a little. http://www.techrepublic.com/blog/wi...
Be aware though that external flash drive memory is a lot slower than RAM memory.