Chapter 3
Plant Kingdom
1. What is the basis of classification of algae?
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2. When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?
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3. Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.
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4. 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 ferm; gemma cell in Marchantia; meristem cell of monocot, ovum of a liverwort, and zygote of a fern.
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5. Write a note on economic importance of algae and gymnosperms.
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6. Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
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7. What is heterospory? Briefly comment on its significance. Give two
examples.
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8. Explain briefly the following terms with suitable examples:-
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy
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9. Differentiate between the following:-
(i) red algae and brown algae
(ii) liverworts and moss
(iii) homosporous and heterosporous pteridophyte
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10. Match the following (column I with column II)
Column I Column II
(a) Chlamydomonas (i) Moss
(b) Cycas (ii) Pteridophyte
(c) Selaginella (iii) Algae
(d) Sphagnum (iv) Gymnosperm
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11. Describe the important characteristics of gymnosperms.
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Type Susmita Kakati
DABP006764
