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Category: Biology

How would you distinguish monocots from dicots?

Class 11 Biology
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Differentiate between the following: (i) Red algae and brown algae (ii) Homosporous and heterosporous pteridophytes (iii) Liverworts and moss (iv) Syngamy and triple fusion.

Class 11 Biology
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 Explain briefly the following terms with suitable examples. (i) Protonema (ii) Antheridium (iii) Archegonium (iv) Diplontic (v) Sporophyll (vi) Isogamy.

Class 11 Biology
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What is heterospory? Briefly comment on its significance. Give two examples.

Class 11 Biology
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Both gymnosperms and angiosperms bear seeds, then why are they classified separately?

Class 11 Biology
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Write a note on the economic importance of algae and gymnosperms

Class 11 Biology
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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.

Class 11 Biology
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Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Class 11 Biology
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When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Class 11 Biology
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What is the basis of classification of algae?

Class 11 Biology
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Give a comparative account of the classes of Kingdom Fungi under the following: (i) mode of nutrition (ii) mode of reproduction

Class 11 Biology
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Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.

Class 11 Biology
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