Q. What is the basis of classification of algae?
Q. When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?
Q. Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one .
Q. Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
Q. What is heterospory? Briefly comment on its significance. Give two examples.