Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
1 Answer Write a note on economic importance of algae and gymnosperms.
1 Answer Mention the ploidy of the following: protonemal cell of a moss; primary endosperm nucleus in dicot; leaf cell of a moss; prothallus cell of a fern; gemma cell in Marchantia; meristem cell of monocot; ovum of a liverwort; and zygote of a fern.
1 Answer Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.
1 Answer When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm, and an angiosperm?
1 Answer What is heterospory? Briefly comment on its significance. Give two examples.
1 Answer Explain briefly the following terms with suitable examples: (i) protonema (ii) antheridium (iii) archegonium (iv) diplontic (v) sporophyll (vi) isogamy
1 Answer Differentiate between the following: (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte
1 Answer Match the following (column I with column II) (a) Chlamydomonas (b) Cycas (c) Selaginella (d) Sphagnum
1 Answer Describe the important characteristics of gymnosperms.
1 Answer 
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