A plant in which sporophytic generation is represented by zygote is

Explanation

Option 1: Pinus Pinus is a gymnosperm, which means that it produces naked seeds. The sporophytic generation in Pinus is the dominant generation, and it is represented by the entire plant, from the roots to the shoots to the cones. The zygote in Pinus is short-lived, and it quickly develops into an embryo. The embryo then develops into a mature sporophyte plant. Option 2: Selaginella Selaginella is a lycopod, which is a type of vascular plant. The sporophytic generation in Selaginella is also the dominant generation, but it is not as dominant as it is in Pinus. The sporophyte in Selaginella is a small, herbaceous plant, and it is found attached to the base of the gametophyte. The zygote in Selaginella develops into an embryo, and the embryo then develops into a mature sporophyte plant. Option 3: Chlamydomonas Chlamydomonas is a type of green alga. The sporophytic generation in Chlamydomonas is very short-lived, and it is represented only by the zygote. The zygote undergoes meiosis to produce haploid spores, and the spores then develop into gametophytes. The gametophytes produce gametes, which fuse to form zygotes. Option 4: Dryopteris Dryopteris is a type of fern. The sporophytic generation in Dryopteris is the dominant generation, and it is represented by the entire plant, from the roots to the shoots to the fronds. The zygote in Dryopteris develops into an embryo, and the embryo then develops into a mature sporophyte plant. Therefore, the correct answer is Chlamydomonas.