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This particular Assignment references the syllabus chosen for the subject of Life Science, for the January 2024 - December 2024 session. The code for the assignment is LSE-12 and it is often used by students who are enrolled in the B.Sc. Degree.
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1. Describe the Endosymbiont Theory. Write the evidences that support this theory.
2. Citing examples and making labelled diagrams, explain the isomorphic and heteromorphic alternation of generation.
3. With the help of a diagram, describe the life cycle of a heteroecious fungus.
4. Trace by giving suitable examples, the evolutionary sequence of sporophytes in bryophytes.
5. What is heterospory? Describe how it has led to the evolution of seed habit in plants?
6. By making labelled diagrams and giving appropriate examples, detail the range of thallus structure in various algal groups.
7. Illustrate the reproductive structures of Marchantia and describe its sexual reproduction.
8. Draw labelled diagrams of T.S. of internode of an aerial branch of Equisetum and T.S. of stem of Selaginella. Compare the features of the two.
9. Detail the disease cycle of ‘Late Blight of Potato’. Mention the measures for control of this disease.
10. Elaborate the structure and anatomy of the major morphological forms of lichens. Support your answer with examples and diagrams.
1. Write short notes on the following:
(i) Pseudoparenchymatous form of fungi
(ii) Mushrooms
(iii) Fungal antibiotics
(iv) Gemma cup
2. (a) Describe the five kingdom classification of organisms.
(b) Explain the three phases involved in sexual reproduction in fungi.
3. Describe the different morphological form of algae giving examples.
4. (a) Explain life cycle of chlamydomans with the help of a well labelled diagram.
(b) Describe in brief the various divisions of eukaryotic algae.
5. Describe various uses of algae.
6. (a) Explain life cycle of Neurospora with the help of a well labelled diagram.
(b) What is the causal agent of wheat rusts? Briefly describe its disease cycle.
7. (a) Give an account on importance of lichens
(b) Describe role of Bryophytes as indicators.
8. Draw well labelled diagrams of the following
(i) L.S. of the mature sporophyte of Marchantia
(ii) Antheridium in Sphagnum
(iii) Mature archaegonium of Funaria
(iv) Capsule of Funaria
9. (a) Explain the process of development of gametophyte in Pteris.
(b) Describe the characteristics of Rhynia gwynne - vaughani.
10. Explain the telome concept.
1. अंतःसहजीवन सिद्धांत का वर्णन कीजिए। इस सिद्धांत की पुष्टि करने वाले प्रमाणों की चर्चा कीजिए ।
2. उदाहरणों तथा नामांकित चित्रों द्वारा समरूपी तथा विषमरूपी पीढ़ियों के प्रत्यावर्तन को समझाइए ।
3. चित्रों की सहायता से एक भिन्नाश्रयी कवक के जीवन चक्र का वर्णन कीजिए ।
4. ब्रायोफाइटों में बीजाणु-उद्भिदों के विकास अनुक्रम की रूपरेखा उचित उदाहरणों सहित दीजिए ।
5. विषमबीजाणुता की व्याख्या कीजिए। इससे पौधों में बीज प्रकृति का विकास कैसे हुआ, समझाइए ।
6. विभिन्न शैवालीय समूहों में थैलस संरचना परिसर का नामांकित चित्रों एवं उदाहरणों की सहायता से वर्णन कीजए।
7. मार्केन्शिया की जननीय संरचनाओं के नामांकित चित्र बनाइए तथा इसके लैंगिक प्रजनन का वर्णन कीजिए |
8. एक्वीसीटम की वायवीय शाखा के पर्व की अनुप्रस्थ काट तथा सैलाजिनेला के तने की अनुप्रस्थ काट को नामांकित चित्रों द्वारा दर्शाइए। इन दोनों के लक्षणों की तुलना भी कीजिए ।
9. आलू की विलंबित अंगमारी के रोग चक्र का विस्तृत वर्णन कीजिए। इसके नियंत्रण के उपायों का उल्लेख कीजिए ।
10. लाइकेनों के प्रमुख प्रकारों की संरचना तथा शरीर को विस्तार से बताइए। अपने उत्तर को उदाहरणों तथा चित्रों की सहायता से स्पष्ट कीजिए।
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