Assuming the sporophyte of plant whose life cycle you are describing is diploid, mark which stages of the life cycle are haploid and which are diploid. Compared to algae and bryophytes, angiosperms are very well adapted to life on land. Focussing only on sexual reproduction in these groups, explain the relative advantages and disadvantages of each group's general mode of sexual reproduction given the kinds of environments these plants inhabit. List the sorts of characteristics that have been used in this classification and explain why this unnatural classification is accepted. Both generations have straplike thalli with rhizoids at the base.
Spores are apparently able to survive in dry soil over the summer.
Make a list of the adaptations that plants needed to achieve in order to successfully survive on dry land. For each adaptation, briefly explain why a plant living on land would have a competitive advantage if they possessed this characteristic. Describe the basic difference that exists between ferns and gymnosperms in their method of dispersal. Then, explain the advantages that each group likely has in dispersal relative to the other group. Construct a table that describes the basic differences in reproductive biology between lycopods, cycads, conifers, and angiosperms.