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).
MasterCard MasterCard will usually begin with 51-55 with 16 digits. Visa Visa credit card numbers will begin with a 4 and have 13 or 16 digits. American Express American Express will usually begin with a 34 or 37 and have 15 digits. Diner's Club Diner's Club will usually begin with a 36 or 55.