question_answer 21)

  Protonema is (a) haploid and is found in mosses                           (b) diploid and is found in liverworts (c) diploid and is found in Pteridophyta  (d) haploid and is found in Pteridophyta

Answer:

                  (a) The germination of haploid spores of mosses produced by saprophyte after reduction division these haploid spores when germinate, form the Protonema. This structure later develops into an independent gametophytic plant.