Thaum paj ntoos tawg ntawm ob theem celled?

Cov txheej txheem:

Thaum paj ntoos tawg ntawm ob theem celled?
Thaum paj ntoos tawg ntawm ob theem celled?
Anonim

Thaum paj paj tawg rau ntawm ob theem celled, ob zaug fertilization tsistshwm sim. Lus Cim: Cov paj paj noob hlis ua rau lub raj paj ntoos uas nqus cov khoom noj rau nws cov khoom tsim los ntawm cov hlwb. Kom yug tau ob tug txiv neej gametes, generative cells faib.

Thaum paj ntoos tawg ntawm ob lub celled theem txiv neej gametes tsim?

Koj yuav nco qab tias hauv qee cov nroj tsuag, paj paj noob qoob loo tau los ntawm ob lub celled mob (ib lub cell vegetative thiab generative cell). Nyob rau hauv xws li cov nroj tsuag, lub generative cell faib thiab tsim ob tug txiv neej gametes thaum lub sij hawm loj hlob ntawm paj ntoos raj hauv stigma.

Thaum paj paj noob qoob los ntawm 2 lub celled theem npe cov hlwb uas muaj?

daim tawv nqaij qias neeg thiab style thiab ncav cuag zes qe menyuam. Inplants, thaum paj paj noob qoob loo los ntawm 2 celled theem lub generative cellfaib thiab tsim ob tug txiv neej gametes thaum lub sij hawm loj hlob ntawm pollen raj nyob rau hauv stigma.

nqe lus twg hauv qab no tsis yog thaum paj ntoos tawg ntawm ob?

Thaum paj paj tawg rau ntawm ob lub celled, ob zaug fertilization tsis tshwm sim.

2 celled theem yog dab tsi?

2-cell theem)

Pom zoo: