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).
Visa, MasterCard, or Discover Card. Look for the 3-digit number immediately following the regular number on the back of your card: American Express Card. Look for the 4-digit number slightly above the embossed (raised) account number on the face of the card.