Heterospory yog ib yam tshwm sim uas ob hom spores tau yug los ntawm tib tsob nrojCov spores txawv qhov loj. Qhov me me yog hu ua microspore thiab qhov loj dua yog hu ua megaspore. Lub microspore germinates los tsim cov txiv neej gametophyte thiab lub megaspore germinates los ua tus poj niam gametophyte.
Heterospory yog dab tsi luv luv tawm tswv yim ntawm nws qhov tseem ceeb thiab muab ob qho piv txwv?
Heterospory yog qhov tshwm sim ntawm kev tsim ntawm ob hom spores, i.e., me me microspore thiab loj megaspore. Qhov tshwm sim no tau tshaj tawm thawj zaug hauv Selaginella, pteridophyte. … Piv txwv ntawm heterospory yog Selaginella, Salvinia thiab Marsilea, thiab lwm yam.
Dab tsi yog heterospory luv luv tawm tswv yim ntawm nws qhov tseem ceeb?
Heterospory yog qhov tshwm sim uas muaj ob yam sib txawv spores raug tsimCov spores txawv qhov loj. Cov spores me me hu ua microspore thaum qhov loj dua spore hu ua megaspore. … Lub heterospory yog thawj kauj ruam ntawm evolution ntawm noob kev loj hlob nyob rau hauv gymnosperms thiab angiosperms.
Yuav ua li cas yog heterospory biological tseem ceeb?
- Heterospory yog li suav tias yog kauj ruam tseem ceeb hauv kev hloov pauv raws li nws yog qhov ua ntej rau cov noob cwj pwm- Heterospory hloov zuj zus ua ntej hauv pteridophytes xws li Selaginella thiab Salvinia. - Cov noob cwj pwm yog qhov nyuaj tshaj plaws thiab evolutionary txoj kev vam meej ntawm kev sib deev.
Dab tsi yog qhov mob heterosporous hauv pteridophytes muab piv txwv thiab nws qhov kev hloov pauv tseem ceeb?
Kev hloov pauv ntawm cov noob cwj pwm yog cuam tshuam nrog kev khaws cia ntawm megaspore. Heterospory yog li no, suav tias yog ib kauj ruam tseem ceeb hauv kev hloov pauv vim nws yog qhov ua ntej rau cov noob cwj pwm. Heterospory evolved thawj zaug hauv pteridophytes xws li Selaginella thiab Salvinia.
