The female gametophyte structure that produces eggs in nonvascular plants are called archegonia. The male structure that produces sperm are called antheridia. A gametophyt â¦ e is the part of the plant that is responsible for creating gametes AKA sexual reproductive cell (sperm or egg).
All American Express cards begin with '37,' followed by currency indicator (digits 3, 4), account number (digits 5-11), card number within account (digits 12-14), and check digit (digit 15).
American ExpressÂ®Card security features. 1. All American Express account numbers are embossed and start. with â37â or â34â. 2. Check account numbers are embossed (15 digits) with no alterations. 3. Check 4 digit Card Identification Number (CID) is hot stamped and. cannot be scratched off.