in the life cycle of plants gametophyte as well as sporophyte plays a vital role but only one dominant justify with suitable example
Dear Student ,
Mentioned below is the case where both gametophytic and sporophytic phase are important in the life cycle of Bryophytes, however the gametophytic phase is dominant.
In Bryophytes, haploid gametophyte is independent, and photosynthetic. The bryophytes remain as gametophte for most of the life cycle. It alternates with multicellular sporophyte. The sporophytic is short lived that is totally or partially dependent on gametophyte for nutrition and anchorage. So, dominant phase in the life cycle of bryophytes is gametophytic phase.
Further more, Sporophyte is the phase in life cycle of plants which is diploid (means cells contain two sets of chromosomes). Sporophyte produces haploid spore through meiosis. Spores germinate into haploid plants also called haploid gametophytes. Gametophytes produces gametes.
Bryophytes show haplodiplontic cycle which is an intermediate condition of haplontic and diplontic life cycles. Both gametophytic (haploid) and sporophytic phases(diploid) are multicellular and often free-living.
Regards
Dear Student ,
Mentioned below is the case where both gametophytic and sporophytic phase are important in the life cycle of Bryophytes, however the gametophytic phase is dominant.
In Bryophytes, haploid gametophyte is independent, and photosynthetic. The bryophytes remain as gametophte for most of the life cycle. It alternates with multicellular sporophyte. The sporophytic is short lived that is totally or partially dependent on gametophyte for nutrition and anchorage. So, dominant phase in the life cycle of bryophytes is gametophytic phase.
Further more, Sporophyte is the phase in life cycle of plants which is diploid (means cells contain two sets of chromosomes). Sporophyte produces haploid spore through meiosis. Spores germinate into haploid plants also called haploid gametophytes. Gametophytes produces gametes.
Bryophytes show haplodiplontic cycle which is an intermediate condition of haplontic and diplontic life cycles. Both gametophytic (haploid) and sporophytic phases(diploid) are multicellular and often free-living.
Regards
