Ikki pallali chig’anoqli mollyuskalar guruhini toping.
1)bitiniya; 2)dreysena; 3)kalmar; 4)tridakna; 5)sadafdor; 6)tirik tug’ar shilliqqurt; 7)ustritsa; 8)karakatitsa

1. 1,4,5,7
2. 2,3,7,8
3. 2,4,6,7
4. 2,4,5,7
5. 1,3,6,8