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).
Below is the full list of credit card issuers and the respective length of their credit card numbers: Visa and Visa Electron Credit Cards. These credit cards have 13 or 16 digits in their number. Mastercard and Discover Credit Cards. Both of the above cards have 16 digits. American Express Credit Cards. AmEx cards have 15 digits in their number. Dinerâs Club: You will find exactly 14 digits in the Dinerâs Club Credit Card number.