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).
For American Express, the four-digit CVV number is printed on the front of the card above the card account number. Visa / MasterCard / Discover American Express The verification number for Visa, MasterCard, and Discover cards are a 3-digit number printed on the back.It appears after and to the right of your card number. The American Express verification number is a 4-digit number printed on the front of your card.he verification number for Visa, MasterCard, and Discover cards are a 3-digit number printed on the back. It appears after and to the right of your card number. The American Express verification number is a 4-digit number printed on the front of your card.