For those who are confused these are the correct answers.
Determine whether each of the following is a characteristic of the life cycle of a seed plant, a seedless plant, or both.
Sporophyte generation    BOTH
Pollination        SEED PLANTS    
Sporophyte contains male and female reproductive structures     SEED PLANTS
Single fertilization    BOTH
Sperm cells transported by water to egg cells    SEEDLESS PLANTS 
Alternation of generations     BOTH
Produce spores          BOTH
Sperm cells travel down tube to ovule    SEED PLANTS
Meiosis       BOTH
Zygote formed       BOTH
Double fertilization       SEED PLANTS    
Gametophyte generation     BOTH
Endosperm formed      SEED PLANTS
Mitosis      BOTH
Spores develop into gametophytes       BOTH