The gametophyte generation is longest and largest phase
Explanation:
Bryophytes evolved from the algae group of the plants which were aquatic environment. The Chara algae which grow in the tidal region evolved to form the first plants which could grow in both water and land called bryophytes.
The bryophytes although obtained nutrition from the terrestrial environment but their gametophytic stage was dependent on the water for the fertilization.
The gametophyte which produces the gametes were larger and independent as compared to the sporophyte which was small. The gametophytes formed the dominant phase of the life cycle of the bryophytes.
Thus, The gametophyte generation is longest and largest phase is correct.
The reason why is because A only pairs with T, and G only pairs with C. So, if you have a strand with GGTCTA, the only possible pairing for that to replicate is CCAGAT.
