The Mosses are the non-vascular plants that were developed from the aquatic plants and the ferns are the vascular plants which developed from the bryophytes.
Their life cycle shows alternation of generation and is largely dependent on the water for reproduction mainly fertilization or fusion of gametes.
The male gametes produced in these plant groups are haploid and are released in water which fuses in water with female gamete which is distinct from the higher plant groups gymnosperms and angiosperms where fertilization is mediated by mostly the wind or insects.
In mitosis, cell division occurs, obtaining 2 daughter cells with the same genetic material in each of the cells that originated them. (same number of chromosomes as the stem cell)
B, because it goes bottom to top and the biggest or strongest animal is at top or decomposer while the weaker ones down so that means when they get eaten some energy for the one below transfers to the next animal