Question
Biology Question on Kingdom Plant
In bryophytes
both generations are independent
gametophytes are dependent upon sporophytes
sporophytes complete their life cycle
sporophytes are dependent upon gameto- phytes.
sporophytes are dependent upon gameto- phytes.
Solution
In bryophytes the main plant body is gametophytic which is independent and may be thallose (no differentiation in root, stem and leaves) e.g., Riccia, Marchantia, Anthoceros etc. or foliose (having leafy axis) e.g. Sphagnum, Funaria etc. The gametophyte bears the sex organs antheridium and archegonium. Sexual reproduction is of oogamous type. It forms zygote that gives rise to the sporophytic phase. It is differentiated into foot, seta and capsule. The capsule produces spores after meiosis that again gives rise to gametophytic phase. The sporophyte is partially or full dependent upon the gametophyte and is of shorter duration.