Question

Which of the following is not an advantage of the haplodiplontic lifecycle in the transition to land?

A. More mitosis are fertilization and the zygote remains unicellular, energy reserves dedicated to the sporophyte

B. Nourishment of the egg and embryo by the parent plant

C. Multicellular haploid phase

D. Spores than resist dessication

Answer 1

haplodiplontic life cycle means both haploid and diploid stages of the plant growth has an equally represented. the haploid spores include the haploid spores ( resistant to desiccation), which give rise to haploid gametophyte, and mitosis in the gametophyte produces sperms and egg which fuse to form the zygote, the zygote develops into a sporophyte, which produces spores by meiosis.

so the haplodiplontic lifecycle helps to survive in the land because the spores produced by the sporophyte are resistant to desiccation

so the answer is D. Spores than resist dessication