IGNOU LSE 12 SOLVED ASSIGNMENT 2025

Ques 1.

अंतःसहजीवन सिद्धांत का वर्णन कीजिए। इस सिद्धांत की पुष्टि करने वाले प्रमाणों की चर्चा कीजिए।

Ques 2.

उदाहरणों तथा नामांकित चित्रों द्वारा समरूपी तथा विषमरूपी पीढ़ियों के प्रत्यावर्तन को समझाइए।

Ques 3.

विषमबीजाणुता की व्याख्या कीजिए। इससे पौधों में बीज प्रकृति का विकास कैसे हुआ, समझाइए ।

Ques 4.

शैवालों के विभिन्न उपयोगों का वर्णन कीजिए।

Ques 5.

सुनामांकित चित्र की सहायता से न्यूरोस्पोरा के जीवन चक्र को समझाइए।

Ques 6.

गेहूं के किट्ट के रोगजनक कौन हैं? उनके रोगचक्र का संक्षिप्त विवरण दीजिए।

Ques 7.

लाइकेन की महत्ता पर लेख लिखिए।

Ques 8.

ब्रायोफाइट्स की सूचक के रूप में भूमिका का वर्णन कीजिए।

Ques 9.

निम्नलिखित के सुनामांकित चित्र बनाइए :

i) मार्केन्शिया बीजाणु-उ‌द्भिद् की अनुदैर्ध्य काट

ii) स्फंगनम के पुंधानी

iii) फ्यूनेरिया के परिपक्व स्त्रीधानी

iv) फ्यूनेरिया का कैप्सूल

Ques 10.

टेरिस में यूग्मको‌द्भिद् के विकास की प्रक्रिया को समझाइए।

Ques 11.

राइनिया ग्वाइनी वॉधनी की विशेषताओं का वर्णन कीजिए।

Ques 12.

टीलोम सिद्धांत को समझाइए।

Ques 13.

औषधीय एजेंटों के रूप में ब्रायोफाइट्स के उपयोगों की गणना करें।

Ques 14.

Describe the Endosymbiont Theory. Write the evidences that support this theory.

Ques 15.

Citing examples and making labelled diagrams, explain the isomorphic and heteromorphic alternation of generation.

Ques 16.

What is heterospory? Describe how it has led to the evolution of seed habit in plants?

Ques 17.

Describe the various uses of algae.

Ques 18.

Explain the life cycle of Neurospora with the help of a well labelled diagram.

Ques 19.

What is the causal agent of wheat rust? Briefly describe its disease cycle.

Ques 20.

Give an account of the importance of lichens.

Ques 21.

Describe the role of bryophytes as indicators.

Ques 22.

Draw well labelled diagrams of the following:

i) L.S. of the mature sporophyte of Marchantia

ii) Antheridium in Sphagnum

iii) Mature archegonium of Funaria

iv) Capsule of Funaria

Ques 23.

Explain the process of development of gametophyte in Pteris.

Ques 24.

Describe the characteristics of Rhyniagwynne - vaughani.

Ques 25.

Explain the telome concept.

Ques 26.

Enumerate the uses of bryophytes as medicinal agents.

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