1. Lichens are symbiotic associations between algae and fungi. 2.The algal component is known as mycobiont and fungal component as phycobiont 3. Algal component is autotrophic and fungal component is heterotrophic 4.Algae absorb water and prepare food for fungi and fungi provide shelter and absorb mineral nutrients for its partner. 5. Lichens are very good pollution indicators – they grow well in polluted areas Regarding 1,2,3,4 and 5: 

1 and 3 are correct; 2,4 and 5 are incorrect

1,3,4 and 5 are correct; 2 is incorrect

1 is correct; 2,3,4 and 5 are incorrect

1,3 and 4 are correct; 2 and 5 are incorrect

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• 1 Biomolecules
• 2 Cell : The Unit of Life
• 3 Respiration in Plants
• 4 Animal Kingdom
• 5 Evolution
• 6 Ecosystem
• 7 The Living World
• 8 Biological Classification
• 9 Reproduction in Organisms
• 10 Sexual Reproduction in Flowering Plants
• 11 Human Reproduction
• 12 Reproductive Health
• 13 Principles of Inheritance and Variation
• 14 Molecular Basis of Inheritance
• 15 Biotechnology : Principles and Processes
• 16 Biotechnology and its Applications
• 17 Human Health and Disease
• 18 Microbes in Human Welfare
• 19 Strategies for Enhancement in Food Production
• 20 Organisms and Populations
• 21 Biodiversity and Conservation
• 22 Environmental Issues
• 23 Plant Kingdom
• 24 Morphology of Flowering Plants
• 25 Anatomy of Flowering Plants
• 26 Structural Organisation in Animals
• 27 Cell Cycle and Cell Division
• 28 Mineral Nutrition
• 29 Photosynthesis in Higher Plants
• 30 Plant Growth and Development
• 31 Digestion and Absorption
• 32 Breathing and Exchange of Gases
• 33 Body Fluids and Circulation
• 34 Excretory Products and their Elimination
• 35 Locomotion and Movement
• 36 Neural Control and Coordination
• 37 Chemical Coordination and Integration
• 38 Transport in Plants