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IGNOU LSE-12 Code Details
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University
IGNOU (Indira Gandhi National Open University)
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Title
Plant Diversity-I Notes
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Language(s)
English
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Code
LSE-12
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Subject
Life Science
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Degree(s)
B.Sc.
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Course
Core Courses (CC)
IGNOU LSE-12 English Topics Covered
Block 1 - (A) Diversity of Plants and Related Organisms
- Unit 1 - Plants and Related Organisms and their Classification
- Unit 2 - Introduction to Cyanobacteria, Fungi, Algae and Lower Plants
Block 2 - (B) Algae
- Unit 1 - Comparative Morphology and Cell Structure in Algae
- Unit 2 - Reproduction in Algae
- Unit 3 - Classification of Algae
- Unit 4 - Algal Habitats and Distribution
- Unit 5 - Algae and Human Welfare
Block 3 - Fungi
- Unit 1 - Fungal Habitats and Morphology
- Unit 2 - Comparative Account of Reproduction in Fungi
- Unit 3 - Fungal Diseases
- Unit 4 - Role of Fungi in Human Welfare
- Unit 5 - Lichens
Block 4 - Bryophytes
- Unit 1 - Morphology and Anatomy of Bryophytes
- Unit 2 - Reproduction and Evolutionary Trends in Bryophytes
- Unit 3 - Importance and uses of Bryophytes
Block 5 - Pteridophytes
- Unit 1 - Pteridophytes: Comparative Morphology and Anatomy
- Unit 2 - Comparative study of Reproduction in Pteridophytes
- Unit 3 - Resume: Lower Plants
IGNOU LSE-12 (January 2024 - December 2024) Assignment Questions
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.
IGNOU LSE-12 (January 2023 - December 2023) Assignment Questions
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.
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