NEET Biology Mineral Nutrition Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation
Question & Answer Discuss:
Specialized cells for fixing atmospheric nitrogen in Nostoc are
(a) hormogonia
(b) nodules
(c) heterocysts
(d) akinetes.
Answer: (c)
Certain species of cyanobacteria (Nostoc) possess some special cells called heterocysts which occur in terminal, basal and intercalary positions. Heterocysts are yellowish in colour and contents are homogenous. Heterocysts are now known as sites of nitrogen fixation. Atmospheric nitrogen is made available in the form of ammonia by cyanobacteria.
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NEET Biology Quiz
Topic Wise Quizzes-
The Living World
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Biological Classification
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Plant Kingdom
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Animal Kingdom
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Morphology of Flowering Plants
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Anatomy of Flowering Plants
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Structural Organisation in Animals
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Cell-The Unit of Life
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Biomolecules
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Cell Cycle and Cell Division
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Transport in Plants
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Mineral Nutrition
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Photosynthesis in Higher Plants
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Respiration in Plants
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Plant Growth and Development
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Digestion and Absorption
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Breathing and Exchange of Gases
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Body Fluids and Circulation
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Excretory Products and Their Elimination
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Locomotion and Movement
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Neural Control and Coordination
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Chemical Coordination and Integration
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Reproduction In Organisms
-
Sexual Reproduction in Flowering Plants
-
Human Reproduction
-
Reproductive Health
-
Principles of Inheritance and Variation
-
Molecular Basis of Inheritance
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Evolution
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Human Health and Diseases
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Strategies for Enhancement in Food Production
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Microbes in Human Welfare
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Biotechnology: Principles and Processes
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Biotechnology and Its Applications
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Organisms and Populations
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Ecosystem
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Biodiversity and Conservation
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Environmental Issues
NEET Biology MCQ Topic Wise Exercise
-
The Living World
-
Biological Classification
-
Plant Kingdom
-
Animal Kingdom
-
Morphology of Flowering Plants
-
Anatomy of Flowering Plants
-
Structural Organisation in Animals
-
Cell-The Unit of Life
-
Biomolecules
-
Cell Cycle and Cell Division
-
Transport in Plants
-
Mineral Nutrition
-
Photosynthesis in Higher Plants
-
Respiration in Plants
-
Plant Growth and Development
-
Digestion and Absorption
-
Breathing and Exchange of Gases
-
Body Fluids and Circulation
-
Excretory Products and Their Elimination
-
Locomotion and Movement
-
Neural Control and Coordination
-
Chemical Coordination and Integration
-
Reproduction In Organisms
-
Sexual Reproduction in Flowering Plants
-
Human Reproduction
-
Reproductive Health
-
Principles of Inheritance and Variation
-
Molecular Basis of Inheritance
-
Evolution
-
Human Health and Diseases
-
Strategies for Enhancement in Food Production
-
Microbes in Human Welfare
-
Biotechnology: Principles and Processes
-
Biotechnology and Its Applications
-
Organisms and Populations
-
Ecosystem
-
Biodiversity and Conservation
-
Environmental Issues
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