1-mashg’ulot mavzu: ko’p shaklli marshansiyaning (marchantia polymorpha) tuzilishi va taraqqiyoti mashg’ulot maqsadi

2-rasm. Nam o’lchagich funariya (Funaria hydrometrica) nasllarining gallanishi.

1-unayotgan sporalar, 2-protonema-kurtakli yosh gametofit, 3-arxegoniyli o’simlik, 4-arxegoniy bilan tuxum hujayra, 5-erkak o’simlik, 6-anteridiylar, 7- urug’langan tuxum hujayra (zigota), 8-yetilgan sporofit, 9-ko’sakcha (sporangiy), 10-ko’sakchadan to’kilgan sporalar.

3-rasm. Kakku zig’irining (Polytrihcum commune) taraqqiyot sikli.

Gametofit: 1-4-sporogen hujayralardan reduksion bo’linish yo’li bilan gaploid sporalarning hosil bo’lishi; 5-sporalar, 6-unayotgan spora, 7-protonema, 8-anteridiyli o’simlik, 9-arxegoniyli o’simlik, 10-anteridiy, 11-spermatozoid, 12-arxegoniy va urug’lanish (U!).

Sporofit: 13-zigotadan sporofitning shakllanishi, 14-sporogon-ning hosil bo’lishi, 15-yetilgan sporogonli o’simlik.