how to get option as install zip from sdcard in recovery system? In recovery system there are many  option as 
apply update from sdcard
wipe data/factory reset
wipe cache partition
backup and restore 

but I cant find install zip from sdcard for installing zip file.
Recovery is of two types:
a. Stock recovery
b. Custom recovery

Stock recovery is the one that comes inbuilt in the phone (which you are using now)..
The "Apply Update" option in stock recovery is same as "Install Zip", except that you can install only official updates using stock recovery.

To install some other ROMs (OS) or for some other things like rooting (by flashing SuperSu or whatever), you have to first flash (install) a custom recovery.
The custom recovery can have the option you said: "Install Zip"