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NCERT Textbook: Plant Kingdom | Science & Technology for UPSC CSE PDF Download

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FAQs on NCERT Textbook: Plant Kingdom - Science & Technology for UPSC CSE

1. What are the different groups of plants mentioned in the NCERT textbook?
Ans. The NCERT textbook "Plant Kingdom" discusses several groups of plants, including algae, bryophytes, pteridophytes, gymnosperms, and angiosperms. These groups are classified based on their characteristics and evolutionary relationships.
2. How do algae differ from other plant groups?
Ans. Algae differ from other plant groups mentioned in the NCERT textbook as they lack true roots, stems, and leaves. They are primarily aquatic organisms, ranging from unicellular to multicellular forms. Algae also exhibit a wide range of pigments, including chlorophyll-a, chlorophyll-b, and various accessory pigments.
3. What are the main features of bryophytes discussed in the NCERT textbook?
Ans. The NCERT textbook highlights some main features of bryophytes, which include their lack of true roots, stems, and leaves. Bryophytes are non-vascular plants that possess rhizoids for absorption and anchorage. They also require a moist environment for reproduction and have a dominant gametophytic phase in their life cycle.
4. How are gymnosperms different from angiosperms?
Ans. Gymnosperms and angiosperms, as discussed in the NCERT textbook, differ in terms of their reproductive structures. Gymnosperms have naked seeds, meaning their seeds are not enclosed within fruits. They also possess cones for reproduction. In contrast, angiosperms have seeds enclosed within fruits and flowers as their reproductive structures.
5. What role do pteridophytes play in the ecosystem?
Ans. Pteridophytes, as mentioned in the NCERT textbook, play a significant role in the ecosystem. They contribute to soil formation and stabilization, act as indicators of environmental pollution, and provide habitats for various organisms. Additionally, pteridophytes are often used in horticulture and landscaping due to their ornamental value.
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